bluuebunny/crossref_metadata_2025 huggingface dataset:
SÍNDROME DE EHLERS-DANLOS TIPO HIPERMOBILIDADE: ESTRATÉGIAS DE INCLUSÃO
Authors: Miller Sandra Maria Corrêa , Lamari Mateus Marino , Lamari Neuseli Marino
Published: April 2015

Introdução: Hipermobilidade Articular (HA) é uma condição clínica hereditária caracterizada pelo aumento da amplitude articular. Quando associada a afecções musculoesqueléticas e/ou extraesqueléticas é considerada uma doença, subdiagnosticada, atualmente denominada Síndrome de Ehlers-Danlos-TipoHipermobilidade (SED-TH). Transtornos e possíveis comorbidades são consideradas por induzir diagnóstico diferencial ou associado. Objetivo: Atualização bibliográfica referente à Hipermobilidade Articular e Síndrome de Ehlers-Danlos-Tipo Hipermobilidade, suas comorbidades e transtornos de aprendizagem; destacar a relevância do diagnóstico adequado das necessidades especiais no contexto da inclusão socioeducacional do corpo no ensino formal e da combinação de técnicas terapêuticas e corporais como estratégias de inclusão. Material e Métodos: Atualização bibliográfica na literatura especializada nas fontes de dados BIREME, SciELOBrazil, LILACS e PubMED utilizando as palavras chave: hipermobilidade articular, motricidade, dor, Síndrome de Ehlers-Danlos, comorbidade, artigos publicados entre 2009-2014.Resultados: Foram localizados 14 artigos relevantes entre 2009-2014, sobre Hipermobilidade Articular e Síndrome de Ehlers-Danlos-Tipo Hipermobilidade. A maioria indica transtornos que podem ser considerados comorbidades. Há desconhecimento sobre Hipermobilidade Articular e Síndrome de Ehlers-Danlos-Tipo Hipermobilidade no âmbito da saúde, assim como nas instituições escolares e há necessidade de acelerar a sinergia entre saberes, como da educação e saúde, relevantes na qualidade de vida, no processo de aprendizagem e inclusão dos portadores. Conclusão: Sugere-se: estudos populacionais nas escolas para a identificação da Síndrome de Ehlers-Danlos-TipoHipermobilidade e possíveis transtornos de aprendizagem relacionados; buscar estratégias de inclusão e apoio nas políticas públicas atuais que garantam promoção ao direito e respeito à diversidade; abordagem multidisciplinar na avaliação clínica e assistência adequada ao portador da Síndrome na faixa etária escolar
SIGNIFICADOS A RESPEITO DO HIV PARA ESCOLARES JOVENS E ADULTOS
Authors: Angelim Rebeca Coelho de Moura , Queiroz Síngara Borba de Araújo , Freitas Rafaela Marrise do Monte , Abrão Fátima Maria Da Silva
Published: April 2015

Introdução: Diante das práticas sexuais desprotegidas e da multiplicidade de parceiros entre jovens e adultos, faz-se necessário conhecer como esses indivíduos percebem a infecção pelo HIV e suas práticas sexuais de risco. Objetivo: Identificar os significados a respeito das pessoas que vivem com HIV e da exposição ao HIV para estudantes inseridos no Programa de Educação de Jovens e Adultos. Casuística e Métodos: Estudo descritivo, de caráter exploratório, com abordagem qualitativa, desenvolvido em duas Escolas Públicas na cidade do Recife, Estado de Pernambuco, Brasil. O período da coleta dos dados ocorreu de setembro a dezembro de 2012. Utilizou-se a técnica de entrevista. Para análise dos dados foi utilizado análise de conteúdo. Participaram 59 alunos. Resultados: A análise resultante das falas foi dividida em três categorias: representação do estereótipo da pessoa que vive com HIV; presença da família no apoio psicológico à pessoa que vive com HIV; e atitudes e ações de risco para a contaminação pelo HIV. Conclusão: Observou-se que estereótipos e estigmas em torno do HIV ainda existem, perpassando por atitudes e práticas preconceituosas, assim como o receio em lidar com esses indivíduos. O estudo identificou ainda que os entrevistados, após visualizarem uma pessoa conhecida infectada pelo HIV, passaram a se preocupar com a realização de comportamentos preventivos durante as relações sexuais. Observamos também como as pessoas estão mais dispostas a apoiar esses indivíduos no enfrentamento da doença.
Prevalence and structure of periodontal disease in patients with coronary heart disease preparing for coronary artery bypass surgery
Authors: Blashkova S L , Galyavich A S , Vasilevskaya E M
Published: April 2015

Aim. To study the prevalence and structure of periodontal disease in in-patients with coronary heart disease preparing for coronary artery bypass surgery.Methods. The study included 144 male in-patients with coronary heart disease who were prepared for coronary artery bypass surgery in the department of cardiac surgery. The diagnosis of periodontal disease was set according to the World Health Organization recommendations based on the comprehensive dental examination. Exclusion criteria were: diabetes mellitus, survived blood transfusions and all teeth missing. A prognostic model based on binary logistic regression method was created for estimation of risk factors on periodontal disease risk.Results.The prevalence of chronic generalized periodontitis in patients with coronary heart disease preparing for coronary artery bypass surgery reaches 73.6%. Mild (51.9%) and moderately severe (48.1%) chronic generalized periodontitis were the most common. Among the risk factors for periodontal disease patients, we have identified older age, smoking, hypertension and survived acute ischemic episodes. For the created model, χ2 value was assessed as 42.7, meaning statistical significance of pConclusion. In in-patients with coronary heart disease, prophylaxis for periodontal disease should be performed to decrease the risk for exacerbations. Using the created prognostic tool in clinical practice may be used for outlining patients with higher risk for periodontal disease.
Revista nº 19
Authors: Direito Revista
Published: April 2015

Revista Direito, Estado e Sociedade
Revista Direito, Estado e Sociedade
Authors: Direito Revista
Published: April 2015

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O Movimento Feminista: modernidade, identidade e a mulher
Authors: Fittipaldi Mariana
Published: April 2015

O trabalho retrata o papel das mulheres na sociedade, representantes que são de um dos grupos sociais que vem há muito tempo lutando por eus interesses a fim de não só terem seus direitos reconhecidos, como também de verem a si próprias reconhecidas na sociedade. Para isso, é feita uma análise do Movimento Feminista e exposta a crítica de Habermas a respeito, a fim de que se possam considerar quais foram até então as conquistas alcançadas e as conseqüências geradas pelo movimento em destaque, quais as carências que ainda prevalecem e concluir-se sobre o que é ser mulher hoje.
O pragmatismo metodológico: a “comunidade de comunicação” como limite da agência humana
Authors: Herdy Rachel
Published: April 2015

Este artigo apresenta o pragmatismo como uma tradição do pensamento que traz a reboque um forte projeto de ordem metodológica. Acredita-se que o pensamento forjado na corrente do pragmatismo apresenta certa visão de mundo que defende um método de investigação social cujos elementos centrais permitem sintetizar os elementos promissores das principais tradições do pensamento metodológico nas ciências sociais. A investigação sugere a validade do consenso enquanto saber gerado numa comunidade de comunicação cujos inquiridores (falantes) reconhecem a sua experiência reflexiva nos processos de argumentação como orientação normativo-crítica geral dos discursos produzidos no mundo da vida Sob este novo cenário, aposta-se na validade da comunicação séria sobre a realidade do mundo da vida e na reflexão inescapável sobre o desenho de nossas instituições [normas, Constituição] – considerado, em sentido eminentemente pragmático, como espelho que reflete a agência humana.
O modelo democrático-deliberativo: possibilidades institucionais
Authors: Zettel Bernardo Barbosa , Ganem Fabrício Faroni , Bolonha Carlos Alberto Pereira das Neves
Published: April 2015

O presente estudo tem como objetivo analisar os principais elementos de um modelo de democracia deliberativa que teve as suas características essenciais definidas pelo resgate do pensamento políticofilosófico de John Rawls, com a publicação de “Uma Teoria da Justiça” (1971). A partir de então, novos estudos despontaram no campo da ciência política, apresentando, em comum, aqueles que podem ser considerados os elementos fundamentais de um ideal democrático-deliberativo. À luz de uma nova perspectiva institucional, busca-se, com este estudo, indicar os rumos propostos pela teoria democrática contemporânea para superar o desafio da pluralidade política. Para tanto, serão analisados quatro valores – a deliberação, a imparcialidade, a responsabilização política e a transparência – que compõem o núcleo do fenômeno democrático e devem se complementar no âmbito da atividade institucional.
Efficiency Evaluation for Femtocell Spectrum Access in LTE-Advanced
Authors: Arafat Omar , Gregory Mark A
Published: April 2015

Femtocells are considered one of the ultimate solutions for the ever increasing demand in LTE-Advance. Recently, wireless industries have resorted to femtocell networks in order to enhance indoor coverage and quality of service since macro-antennas fail to reach these objectives. In enabling indoor home or enterprise users with mobile broadband solutions, role of femtocells are crucially important. While considering low cost solutions for higher coverage and data rate, femtocells apparently have one of the best potentials for indoor users. Due to the dense self-deployment of femtocells in a limited area, serious inter-femtocell interference (IFI) may cause, which consequently results in severe performance degradation. To mitigate the IFI and utilize spectrum resource more efficiently, this paper proposes a cluster based femtocell deployments along with a capacity based cognitive resource allocation scheme .Three different channel configurations in a hybrid access femtocell network are considered for performance analysis. The results of a performance analysis of the cluster based femtocell configurations in a priority based users’ network are presented.
Evidence in Variscan Corsica of a brief and voluminous Late Carboniferous to Early Permian volcanic-plutonic event contemporaneous with a high-temperature/low-pressure metamorphic peak in the lower crust
Authors: Rossi Philippe , Cocherie Alain , Fanning C. Mark
Published: April 2015

The U2 group of plutonic rocks constituting the main exposed part of the Corsica-Sardinia batholith (CSB) was emplaced from 308 to 275 Ma (the early Visean U1 group of Mg-K intrusions is not considered here). Field evidence earlier established volcanic-plutonic relationships in the U2 group of calc-alkaline intrusions of the CSB, though detailed chronological data were still lacking.

Large outcrops of U2 volcanic formations are restricted to the less eroded zone north-west of the Porto-Ponte Leccia line in Corsica, but volcanic and volcano-sedimentary formations were widely eroded elsewhere since Permian times. They probably covered most of the batholith before the Miocene, as testified by the volcanic nature of the pebbles that form much of the Early Miocene conglomerates of eastern Corsica. U-Pb zircon dating (SHRIMP) was used for deciphering the chronology and duration of different volcanic pulses and for better estimating the time overlap between plutonic and volcanic rock emplacement in the CSB.

The obtained ages fit well with field data, showing that most of the U2 and U3 volcanic formations were emplaced within a brief time span of roughly 15 m.y., from 293 to 278 Ma, coeval with most U2 monzogranodiorites and leucomonzogranites (295–280 Ma), alkaline U3 complexes (about 288 Ma), and mafic-ultramafic tholeiitic complexes (295–275 Ma). The same chronological link between deep-seated magma chambers and eruptions was identified in the Pyrenees.

These results correlate with U-Pb zircon dating of HT-LP granulites from the Variscan deep crust exhumed along the “European” margin of the thinned Tethys margin in Corsica and Calabria. Here, the peak of the low-pressure/high-temperature metamorphism was dated at about 285–280 Ma. Our results throw light on the condition of magma production during the orogenic collapse in the southern Variscan realm. While juvenile tholeiitic basaltic magma was produced by the melting of spinel mantle lithosphere, all fertile protoliths melted in a brief period during the HT-LP peak in lower continental crust, leading to massive emplacement of large felsic U2 calc-alkaline and minor U3 A-type volcano-plutonic formations over about 15 Ma.
Produced and Flowback Water Recycling and Reuse: Economics, Limitations, and Technology
Authors: Boschee Pam
Published: April 2015

The demands for the fresh water used in many hydraulic fracturing operations are placing pressure on water sources in some regions of the United States. Because of the high volumes of water needed for fracturing (e.g., in the Marcellus, a typical hydraulic fracturing operation for a horizontal gas well in a tight shale formation requires from 3 to 5 million gallons of water over a 2- to 5-day period), the competing demand driven by industrial, municipal, and agricultural users has in some cases decreased the availability of fresh water and increased associated costs.
Modeling the Behavior of Asphaltenes
Authors: Whitfield Stephen
Published: April 2015

When planning an offshore exploration and production project, operators must consider several potential pitfalls that could derail their progress. Any number of things can turn a hot prospect into a nightmare.
Improving Human Performance: Tackling the Challenges to Develop Effective Safety Cultures
Authors: Boschee Pam
Published: April 2015

Human error is identified as a root cause of accidents and incidents in 60% to 80% of the cases and a causal factor in another 50% to 60% of all mishaps across many industries. Although the human contribution is recognized, efforts to improve human performance by influencing behaviors and attitudes are often ineffective or even elusive.
Gas/Liquid Separators: Quantifying Separation Performance - Part 1
Authors: Bothamley Mark
Published: April 2015

Many two-phase and three-phase separators in the oil and gas industry continue to underperform. Sometimes, the wrong type of equipment was selected, or the correct type of equipment was selected, but the sizing methodology was inadequate.
Case Study: Repsol Shows the Way To Conserve Ecuador’s Amazon
Authors: Furlow William
Published: April 2015

The "social license to operate" (SLO) is a term growing in importance in the upstream industry. It refers to the level of acceptance or approval by local communities and stakeholders of oil and gas companies and their operations. Evolving from the broader and more established notion of corporate social responsibility, the concept is based on the idea that companies need not only government permission (or permits), but also the "social permission" to conduct their business. While public support of exploration and production operations has always been critical to success, the United States shale boom brought the issue to the forefront.
Design of Onshore Production Systems for Unconventional Resources
Authors: Boschee Pam
Published: April 2015

The application of lessons learned in projects is generally a trusted approach to tackling design challenges. However, the design of onshore production systems for unconventional resources does not allow for straightforward crossover from onshore or offshore conventional to unconventional systems.
Tanker Conversions to FPSO: Design and Integrity Management Challenges
Authors: Boschee Pam
Published: April 2015

As deepwater exploration and production grows globally, floating production, storage, and offloading (FPSO) vessels continue to dominate expenditure on floating production systems (FPS). Oil and Gas Facilities’ "Global Market Trends" in April reported that FPSO account for USD 18 billion of the USD 20 billion in FPS spending expected over the next 5 years.
The Challenges of Processing and Transporting Heavy Crude
Authors: Borden Keefe
Published: April 2015

Looking forward, many of the world’s oil producers will have to think more carefully about heavy crudes and the challenges they pose for processing, storage, and transportation. To date, most of the world’s ongoing demand for crude has focused on lighter grades, which until relatively recently have been the primary, commercially available resource. However, those lighter, premium resources are in decline, leaving a growing percentage of the world’s oil supply to increasingly heavier grades. And supplies of the heavier grades remain plentiful. Current production accounts for less than 3% of the discovered heavy oil originally in place.
Corrosion Monitoring and Mitigation Technologies
Authors: Borden Keefe
Published: April 2015

A wide range of corrosive elements and compounds from a variety of crudes has led to a renewed industry focus on corrosion and the effects it has on pipelines and vessels. The additional attention has encouraged researchers to develop new techniques for mitigating the effects of corrosion and for monitoring the effectiveness of those agents.
Advanced Semianalytical Geomechanical Model for Wellbore-Strengthening Applications
Authors: Shahri Mojtaba P. , Oar Trevor T. , Safari Reza , Karimi Moji , Mutlu Uno
Published: April 2015

Drilling depleted reservoirs often encounters a host of problems leading to increases in cost and nonproductive time. One of these problems faced by drillers is lost circulation of drilling fluids, which can lead to greater issues such as differential sticking and well-control events. Field applications show that wellbore strengthening effectively helps reduce mud-loss volume by increasing the safe mud-weight window. Wellbore-strengthening applications are usually designed on the basis of induced-fracture characteristics (i.e., fracture length, fracture width, and stress-intensity factor). In general, these fracture characteristics depend on several parameters, including in-situ stress magnitude, in-situ stress anisotropy, mechanical properties, rock texture, wellbore geometry, mud weight, wellbore trajectory, pore pressure, natural fractures, and formation anisotropy. Analytical models available in the literature oversimplify the fracture-initiation and fracture-propagation process with assumptions such as isotropic stress field, no near-wellbore stress-perturbation effects, vertical or horizontal wells only (no deviation/inclination), constant fracture length, and constant pressure within the fracture. For more-accurate predictions, different numerical methods, such as finite element and boundary element, have been used to determine fracture-width distribution. However, these calculations can be computationally costly or difficult to implement in near-real time. The aim of this study is to provide a fast-running, semianalytical work flow to accurately predict fracture-width distribution and fracture-reinitiation pressure (FRIP). The algorithm and work flow can account for near-wellbore-stress perturbations, far-field-stress anisotropy, and wellbore inclination/deviation. The semianalytical algorithm is modeled after singular integral formulation of stress field and solved by use of Gauss-Chebyshev polynomials. The proposed model is computationally efficient and accurate. The model also provides a comprehensive perspective on formation-strengthening scenarios; a tool for improved lost-circulation-materials design; and an explanation of how they are applicable during drilling operation (in particular, through depleted zones). Sensitivity analysis included in this paper quantifies the effect of different rock properties, in-situ-stress field/anisotropy, and wellbore geometry/deviation on the fracture-width distribution and FRIP. In addition, the case study presented in this paper demonstrates the applicability of the proposed work flow in the field.
Use & Misuse of Water-filtered Tobacco Smoking Pipes in the World. Consequences for Public Health, Research & Research Ethics
Authors: Chaouachi Kamal
Published: April 2015

Background:

The traditional definition of an “epidemic” has been revisited by antismoking researchers. After 400 years, Doctors would have realized that one aspect of an ancient cultural daily practice of Asian and African societies was in fact a “global “epidemic””. This needed further investigation particularly if one keeps in his mind the health aspects surrounding barbecues.

Method:

Here, up-to-date biomedical results are dialectically confronted with anthropological findings, hence in real life, in order to highlight the extent of the global confusion: from the new definition of an “epidemic” and “prevalence” to the myth of “nicotine “addiction”” and other themes in relation to water filtered tobacco smoking pipes (WFTSPs).

Results:

We found that over the last decade, many publications, -particularly reviews, “meta-analyses” and “systematic reviews”- on (WFTSPs), have actually contributed to fuelling the greatest mix-up ever witnessed in biomedical research. One main reason for such a situation has been the absolute lack of critical analysis of the available literature and the uncritical use of citations (one seriously flawed review has been cited up to 200 times). Another main reason has been to take as granted a biased smoking robot designed at the US American of Beirut whose measured yields of toxic chemicals may differ dozens of times from others' based on the same “protocol”. We also found that, for more than one decade, two other main methodological problems are: 1) the long-lived unwillingness to distinguish between use and misuse; 2) the consistent unethical rejection of biomedical negative results which, interestingly, are quantitatively and qualitatively much more instructive than the positive ones.

Conclusion:

the great majority of WFTSP toxicity studies have actually measured, voluntarily or not, their misuse aspects, not the use in itself. This is in contradiction with both the harm reduction and public health doctrines. The publication of negative results should be encouraged instead of being stifled.
Alcohol-Related Attitudes of Heavy Drinkers: Effects of Arousal and Valence in Evaluative Conditioning
Authors: Choi Yoon Jung , Lee Jang-Han
Published: April 2015

We investigated the effects of 2 dimensions of affect in evaluative conditioning (EC) on changing alcohol-related attitudes in a sample of students whom we had identified as fitting set criteria to be classified as heavy drinkers. We divided participants into 2 EC groups (high-arousal
EC condition, n = 18; low-arousal EC condition, n = 18) and measured their explicit and implicit attitudes toward alcohol. Comparison of results before and after EC indicated that participants reported a greater decrease in both explicit attitudes about positive alcohol expectancies
and explicit cravings. However, in regard to implicit attitudes, the results showed that the high-arousal EC condition was associated with a stronger positive attitude toward alcohol after, rather than before, EC, whereas in the low-arousal EC group, implicit attitudes toward alcohol did not
change. These results imply that high levels of affect arousal during EC can positively strengthen the implicit evaluation of alcohol in a student sample of heavy drinkers, while decreasing explicit attitudes about cravings and positive expectancies. Thus, based on attitude conditioning, it
is important to consider the arousal as well as the valence of affect in treatment of alcohol addiction in order to change alcohol-related attitudes in heavy drinkers.
Peer Attachment and Social Anxiety: Gender as a Moderator Across Deaf and Hearing Adolescents
Authors: Lu Aitao , Tian Haiping , Yu Yanping , Feng Yi , Hong Xiuxiu , Yu Zuwei
Published: April 2015

We examined the relationship between peer attachment and social anxiety across gender for adolescents who were deaf compared with adolescents with normal hearing, in order to establish whether or not there was a gender difference in this relationship and whether this difference varied
across the 2 groups. The study was conducted with adolescents attending inner-city schools in Guangzhou, China. Participants were 112 adolescents who were deaf and who were attending 5 special schools, and 133 adolescents with normal hearing who were attending either an elementary or a middle
school. Participants completed the Inventory of Peer Attachment and the Social Anxiety Scale for Children. We found that the link between peer attachment and social anxiety was stronger for adolescent girls with normal hearing than it was for adolescent boys with normal hearing, whereas this
link was at a similar level for adolescent boys and girls who were deaf. The findings suggest that the effect of gender on peer attachment varies as a function of life experience of adolescents who are and are not deaf, and this underscores the importance of incorporating individual characteristics
of adolescents in studies of their gender health inequalities.
Effects of Separation Age and Separation Duration Among Left-behind Children in China
Authors: Ling Hui , Fu En , Zhang Jian-ren
Published: April 2015

Left-behind children (LBC) are those who continue to live in their hometown after one or both parents have left for occupational opportunities elsewhere. In this study, we examined the relationship between the age of the children at separation from parents (age), the duration of separation
(time), and the behavioral and emotional status of the children. Participants (268 LBC and 228 non-LBC) in China completed the Youth Self Report (YSR), Depression Self-rating Scale for Children, and Children's Loneliness Scale. The results showed that LBC scored higher than the non-LBC on
loneliness, behavior problems, and several YSR subscales. There was no main effect of age and time on loneliness or behavior problems, but there was an interaction effect of age and time on several YSR subscales. Our findings extend those of existing studies on the effects of parent-child
separation in the LBC scenario.
Does Helping Others Impair Caregivers' Health? Associating Caregiving, Life Satisfaction, and Physical Health
Authors: Reizer Abira , Hetsroni Amir
Published: April 2015

We examined whether or not negative caregiving orientations, namely hyperactivation and deactivation, impair physical health of caregivers through the mediating role of life satisfaction. A sample of Israeli adults (N = 354) completed self-report scales measuring caregiving,
life satisfaction, and self-rated health (SRH). Caregiving hyperactivation and deactivation predicted reductions in both life satisfaction and SRH of caregivers. A mediation model suggested that the associations between negative caregiving orientations and physical health are significantly
mediated by life satisfaction. The results are discussed in relation to the contribution of individuals' interpersonal perceptions to their physical health.
Investigation into the flux distribution of central carbon metabolism in Corynebacterium glutamicum using principal component analysis
Authors: Shang Chuanyu , Zhou Xiangfei , Zhou Wenwei , Xie Xiaoyao , Yi Yin
Published: April 2015

Central carbon metabolism is the main source of energy required by organisms
and it provides precursors for other in vivo metabolic processes. The flux
flowing through the pathways involved in central carbon metabolism
characterizes its biological function and genetic readout between species or
environments. In recent years, using a 13C tracer technique, researchers have
measured the flux of central carbon metabolism in Corynebacterium glutamicum
under a variety of nutritional and environmental changes or genetic
modifications. However, there is no integrated and comparative analysis of
these measured flux values. In this study, the flux values of central carbon
metabolism in Corynebacterium glutamicum that were obtained in other recent
studies were consolidated. A preliminary examination of the distribution
characteristics of flux values in each metabolic pathway was conducted and
the regression relationship between different fluxes was investigated. The
principal components of the flux vector were further extracted and aggregated
based on the components, and the general features of flux distribution of
central carbon metabolism as well as the influence of environmental and
genetic factors on the flux distribution were determined. This study provides
a foundation for further investigation into the flux distribution and
regulation characteristics of central carbon metabolism.
Stimulation of diesel degradation and biosurfactant production by aminoglycosides in a novel oil-degrading bacterium Pseudomonas luteola PRO23
Authors: Atanaskovic Iva , Jovicic-Petrovic Jelena , Biocanin Marjan , Karlicic Vera , Raicevic Vera , Lalevic Blazo
Published: April 2015

Bioremediation is promising technology for dealing with oil hydrocarbons
contamination. In this research growth kinetics and oil biodegradation
efficiency of Pseudomonas luteola PRO23, isolated from crude oil-contaminated
soil samples, were investigated under different concentrations (5, 10 and 20
g/L) of light and heavy crude oil. More efficient biodegradation and more
rapid adaptation and cell growth were obtained in conditions with light oil.
The 5 to 10 g/L upgrade of light oil concentration stimulated the microbial
growth and the biodegradation efficiency. Further upgrade of light oil
concentration and the upgrade of heavy oil concentration both inhibited the
microbial growth, as well as biodegradation process. Aminoglycosides
stimulated biosurfactant production in P. luteola in the range of
sub-inhibitory concentrations (0.3125, 0.625 ?g/mL). Aminoglycosides also
induced biofilm formation. The production of biosurfactants was the most
intense during lag phase and continues until stationary phase.
Aminoglycosides also induced changes in P. luteola growth kinetics. In the
presence of aminoglycosides this strain degraded 82% of diesel for 96 h.
These results indicated that Pseudomonas luteola PRO23 potentially can be
used in bioremediation of crude oil-contaminated environments and that
aminoglycosides could stimulate this process.
Processing of porcelain stoneware tile using sugarcane bagasse ash waste
Authors: Schettino Myrian , Holanda José
Published: April 2015

Large amounts of waste materials are discarded in the sugarcane industry.
This work investigates the reuse of sugarcane bagasse ash waste as an
alternative raw material for porcelain stoneware tile bodies, replacing
natural quartz by up to 5 wt.%. The tile pieces were fired at 1230 ?C using a
fast-firing cycle (< 60min). The technological properties of the fired tile
pieces (e.g., linear shrinkage, water absorption, apparent density, and
flexural strength) were determined. The sintering process was followed by SEM
and XRD analyses. The results show that up to 2.5 wt.% sugarcane bagasse ash
waste can be used as a partial replacement for quartz in porcelain stoneware
tile (group BIa, ISO 13006 standard), providing excellent technical
properties. Hence, its application in high-quality ceramic tile for use in
civil construction as a low-cost, alternative raw material could be an ideal
means of managing sugarcane bagasse ash waste.
Effects of Sr2+ doping on the electrical properties of (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramics
Authors: Singh Amrita , Prasad Kamal , Prasad Ashutosh
Published: April 2015

The influence of SrTiO3 addition on the microstructure and various electrical
properties of (Bi0.5Na0.5)0.94Ba0.06TiO3 (BNTBT6) ceramics, fabricated by a
conventional high temperature solid state reaction, was investigated.
Analysis of X-ray diffraction patterns revealed the formation of phase pure
materials with tetragonal unit cell structure, tetragonality parameter c/a in
the interval from 0.9940 to 1.0063 and crystallite sizes ranging from 33-76
nm for addition of 0.2 to 1 wt.%of SrTiO3. SEMstudies indicated that Sr2+
doping led to decrease in grain size and non-homogeneity of grain
distribution for higher SrTiO3 amount (>0.6 wt.%). Complex impedance,
modulus, and conductivity studies indicated the presence of grains and grain
boundary contribution, non-Debye type of relaxation and NTCR behaviour of the
test ceramic samples. Temperature dependent real part of complex permittivity
showed peaks at 475?C and the dielectric loss tangent showed peaks
corresponding to 125?C and 475?C for almost all compositions. AC activation
energies, computed using Arrhenius relation in the temperature range of
325-500?C for the BNTBT6 ceramic compositions having SrTiO3 concentration
from 0.2 to 1.0 wt.%, were seen to have maximal values at the lowest
measurement frequency. Amongst the different chosen doped BNTBT6 ceramic
compositions, the composition having 0.6wt.%of SrTiO3 showed the best
ferroelectric and piezoelectric response with maximum value of Pr (8.24
?C/cm2), minimum value of Ec (5.73 kV/mm) and maximum d33 value (?46 pC/N).
Management of myelofibrosis during pregnancy: A case report
Authors: Zivkovic Radmila , Markovic Olivera , Marisavljevic Dragomir , Terzic Tatjana , Tukic Ljiljana
Published: April 2015

Introduction. Primary myelofibrosis (PMF) is a clonal myeloproliferative
neoplasm that occurs most commonly in the decade six of life and it is very
rare in the young persons. Case report. We reported a 28-year-old female
patient with primary myelofibrosis who had a normal pregnancy and delivery in
the week 40 of pregnancy without any complications. Two years before the
diagnosis of PMF she had normal pregnancy. The patient was treated with
interferon-alpha and low dose aspirin during the whole pregnancy and with
low-molecular-weight heparin a week before delivery and 6 weeks after. The
patient had no complications during pregnancy. She delivered in term with
healthy, normal baby weight. Conclusion. Decision about treatment strategy of
pregnancy associated hematologic malignancies should be made for each patient
individually.
Surgical excision of anal sac apocrine gland adenocarcinomas with and without adjunctive chemotherapy in dogs: 42 cases (2005–2011)
Authors: Potanas Christopher P. , Padgett Sheldon , Gamblin Rance M.
Published: April 2015

Objective—To identify variables associated with prognosis in dogs undergoing surgical excision of anal sac apocrine gland adenocarcinomas (ASACs) with and without adjunctive chemotherapy.

Design—Retrospective case series.

Animals—42 dogs with ASACs.

Procedures—Information on signalment, clinical signs, diagnostic procedures, surgical procedures, adjunctive therapies, survival time, and disease-free interval was obtained from the medical records.

Results—Survival time was significantly associated with the presence of sublumbar lymphadenopathy and sublumbar lymph node extirpation, with median survival time significantly shorter for dogs with sublumbar lymphadenopathy (hazard ratio, 2.31) than for those without and for dogs that underwent lymph node extirpation (hazard ratio, 2.31) than for those that did not. Disease-free interval was significantly associated with the presence of sublumbar lymphadenopathy, lymph node extirpation, and administration of platinum-containing chemotherapeutic agents, with median disease-free interval significantly shorter for dogs with sublumbar lymphadenopathy (hazard ratio, 2.47) than for those without, for dogs that underwent lymph node extirpation (hazard ratio, 2.47) than for those that did not, and for dogs that received platinum-containing chemotherapeutic agents (hazard ratio, 2.69) than for those that did not. Survival time and disease-free interval did not differ among groups when dogs were grouped on the basis of histopathologic margins (complete vs marginal vs incomplete excision).

Conclusions and Clinical Relevance—Results suggested that in dogs with ASAC undergoing surgical excision, the presence of sublumbar lymphadenopathy and lymph node extirpation were both negative prognostic factors. However, completeness of surgical excision was not associated with survival time or disease-free interval.
Assessment of Impulse Noise Hazard and the Use of Hearing Protection Devices in Workplaces Where Forging Hammers are Used
Authors: Młyński Rafał , Kozłowski Emil , Adamczyk Jan
Published: April 2015

The impulse noise is agent harmful to health not only in the case of shots from firearms and the explosions of explosive materials. This kind of noise is also present in many workplaces in the industry. The paper presents the results of noise parameters measurements in workplaces where four different die forging hammers were used. The measured values of the C-weighted peak sound pressure level, the A-weighted maximum sound pressure level and A-weighted noise exposure level normalized to an 8 h working day (daily noise exposure level) exceeded the exposure limit values. For example, the highest measured value of the C-weighted peak sound pressure level was 148.9 dB. In this study possibility of the protection of hearing with the use of earplugs or earmuffs was assessed. The measurement method for the measurements of noise parameters under hearing protection devices using an acoustical test fixture instead of testing with the participation of subjects was used. The results of these measurements allows for assessment which of two tested earplugs and two tested earmuffs sufficiently protect hearing of workers in workplaces where forging hammers are used.
In Memoriam. Zygmunt Grzegorz Wąsowicz Ph.D.
Authors: Dobrucki Andrzej
Published: April 2015

Zygmunt G. Wąsowicz, PhD emeritus of the Chair of Acoustics and Multimedia, Wrocław University of Technology, passed away on the 8th of January 2014. His whole professional career was associated with the acoustics. Dr. Z. Wąsowicz was born in Nowy Sącz in 1931. In 1956 he graduated from the Faculty of Telecommunications at the Wrocław University of Technology and started to work there in the same year. In 1966 he obtained the PhD title, under supervision of Professor Z. Żyszkowski, for the dissertation concerning the subjective criteria of nonlinear distortions in loudspeakers. His main interests of activity were room acoustics as well as subjective assessment of sound quality. He worked out the subjective method of loudspeaker evaluation for Polish Loudspeaker Company “Tonsil” – this method was based on so-called “the live apparent sound”. He worked also on computer methods of acoustical field modeling in rooms. The works mentioned above were pioneer and modern in Poland. He participated as an acoustician, in various designers groups at for example auditory halls of Faculty of Electronics. Dr. Wąsowicz was the outstanding academical teacher whom students liked very much. He was also a member of Polish Acoustical Society and worked for the Main Board as well as the Wrocław Division of this society. In periods 1979–1983 and 1994–1996 he was the vice-dean of Faculty of Electronics. He received many awards, for example Golden Cross of Merit, Knight’s Cross of the Order of Polonia Restituta, Medal of the National Education Commission and many awards from the Governors of Wrocław University of Technology and Institute of Telecommunications and Acoustics. In 1996 he was retired and beside of this he stayed in contact with Faculty of Electronics for many years. Wrocław acoustical community mourns the loss of Dr. Z. Wąsowicz.
Ultrasonic Synthetic Apertures: Review
Authors: Nowicki Andrzej , Gambin Barbara
Published: April 2015

In the paper the concept of synthetic aperture used for high resolution/high frame rate ultrasonic imaging is reviewed. The synthetic aperture technique allows building extended “virtual” apertures, synthesized from smaller real aperture resulting in improved lateral resolution along full penetration depth without sacrificing the frame rate.

Especially, four methods, synthetic aperture focusing (SAF), multi-element synthetic aperture focusing (M-SAF), synthetic receive aperture (SRA) and synthetic transmit aperture (STA) are addressed. The effective aperture function, describing two-way, far field radiation is a useful tool in beam pattern analysis. Some basic notations, which are used to calculate the effective aperture are introduced in Appendix.
An Assessment of High-Order-Mode Analysis and Shape Optimization of Expansion Chamber Mufflers
Authors: Chiu Min-Chie , Chang Ying-Chun
Published: April 2015

A substantial quantity of research on muffler design has been restricted to a low frequency range using the plane wave theory. Based on this theory, which is a one-dimensional wave, no higher order wave has been considered. This has resulted in underestimating acoustical performances at higher frequencies when doing muffler analysis via the plane wave model. To overcome the above drawbacks, researchers have assessed a three-dimensional wave propagating for a simple expansion chamber muffler. Therefore, the acoustic effect of a higher order wave (a high frequency wave) is considered here. Unfortunately, there has been scant research on expansion chamber mufflers equipped with baffle plates that enhance noise elimination using a higher-order-mode analysis. Also, space-constrained conditions of industrial muffler designs have never been properly addressed. So, in order to improve the acoustical performance of an expansion chamber muffler within a constrained space, the optimization of an expansion chamber muffler hybridized with multiple baffle plates will be assessed.

In this paper, the acoustical model of the expansion chamber muffler will be established by assuming that it is a rigid rectangular tube driven by a piston along the tube wall. Using an eigenfunction (higher-order-mode analysis), a four-pole system matrix for evaluating acoustic performance (STL) is derived. To improve the acoustic performance of the expansion chamber muffler, three kinds of expansion chamber mufflers (KA-KC) with different acoustic mechanisms are introduced and optimized for a targeted tone using a genetic algorithm (GA). Before the optimization process is performed, the higher-order-mode mathematical models of three expansion chamber mufflers (A-C) with various allocations of inlets/outlets and various chambers are also confirmed for accuracy. Results reveal that the STL of the expansion chamber mufflers at the targeted tone has been largely improved and the acoustic performance of a reverse expansion chamber muffler is more efficient than that of a straight expansion chamber muffler. Moreover, the STL of the expansion chamber mufflers will increase as the number of the chambers that separate with baffles increases.
The Effect of Plate Discretization on Accuracy of the Sound Radiation Efficiency Measurements
Authors: Kolber Karolina , Snakowska Anna , Kozupa Michał
Published: April 2015

This paper deals with the problem of the effect of discretization level and certain other parameters characterizing the measurement setup on accuracy of the process of determination of the sound radiation efficiency by means of the Discrete Calculation Method (DCM) described by Hashimoto (2001).

The idea behind DCM consists in virtual division of an examined sound radiating structure into rectangular elements each of which is further assumed to contribute to the total radiation effect in the same way as a rigid circular piston having the surface area equal to this of the corresponding virtual element and vibrating in an infinite rigid baffle. The advantage of the method over conventional sound radiation efficiency measurement techniques consists in the fact that instead of acoustic pressure values, source (plate) vibration velocity amplitude values are measured in a selected number of regularly distributed points. In many cases, this allows to determine the sound radiation efficiency with sufficient accuracy, especially for the low frequency regime.

The key part of the paper is an analysis of the effect of discretization level (i.e. the choice of the number of points at which vibration amplitude measurements are to be taken with the use of accelerometers) on results obtained with the use of the method and their accuracy. The problem of determining an optimum level of discretization for given excitation frequency range is a very important issue as the labor intensity (time-consuming aspect) of the method is one of its main flaws. As far as the technical aspect of the method is concerned, two different geometrical configurations of the measurement setup were tested.
Acoustic System of Determining the Instantaneous Volume of the Blood Part of the Ventricular Assist Device POLVAD-EXT
Authors: Konieczny Grzegorz , Pustelny Tadeusz , Opilski Zbigniew , Gawlikowski Maciej
Published: April 2015

The paper presents the results of investigations concerning the noninvasive method of estimating the actual volume of the blood chamber of the POLVAD-EXT type ventricular assist device (VAD) during its operation. The proposed method is based on the principle of Helmholtz's acoustic resonance. Both the theory, main stages of the development of the measurement method as well as the practical implementation of the proposed method in the physical model of the POLVAD-EXT device are dealt with. The paper contains the results of static measurements by means of the proposed method (conducted at the Department of Optoelectronics, Silesian University of Technology) as well as the dynamic measurements taken at the Foundation of Cardiac Surgery Development (Zabrze, Poland) with the professional model of the human cardiovascular system. The results of these measurements prove that the proposed method allows to estimate the actual blood chamber volume with uncertainties below 10%.
Control of Bending-Bending Coupled Vibrations of a Rotating Thin-Walled Composite Beam
Authors: Latalski Jarosław , Bocheński Marcin , Warmiński Jerzy
Published: April 2015

The paper presents a study of a possible application of structure embedded piezoelectric actuators to enhance the performance of a rotating composite beam exhibiting the coupled flexural-flexural vibrations. The discussed transversal and lateral bending modal coupling results from the directional properties of the beam's laminate and ply stacking distribution. The mathematical model of the beam is based on an assumption of cross-sectional non-deformability and it incorporates a number of non-classical effects. The final 1-D governing equations of an active composite beam include both orthotropic properties of the laminate and transversely isotropic properties of piezoelectric layers. The system's control capabilities resulting from embedded Macro Fiber Composite piezoelectric actuators are represented by the boundary bending moment. To enhance the dynamic properties of the composite specimen under consideration a combination of linear proportional control strategies has been used. Comparison studies have been performed, including the impact on modal coupling magnitude and cross-over frequency shift.
Modal Analysis of a Trapezoidal Violin Built After the Description of Félix Savart
Authors: Duerinck Tim , Skrodzka Ewa , Linde Bogumił B.J.
Published: April 2015

One-dimensional experimental modal analysis of an unvarnished trapezoidal violin built after the description of F. Savart and an anonymous trapezoidal violin on display in the Music Instrument Museum of Brussels is described. The analysis has revealed ten prominent modes. A mode that may potentially play a role of the “tonal barometer” of the instrument is pointed out. The mode shapes are symmetric and of high amplitude, due to the construction of the instrument. Subjective evaluation of the sound quality demonstrated no pronounced difference between the trapezoidal violin and normal violin.
Classification of Music Genres Based on Music Separation into Harmonic and Drum Components
Authors: Rosner Aldona , Schuller Bjӧrn , Kostek Bozena
Published: April 2015

This article presents a study on music genre classification based on music separation into harmonic and drum components. For this purpose, audio signal separation is executed to extend the overall vector of parameters by new descriptors extracted from harmonic and/or drum music content. The study is performed using the ISMIS database of music files represented by vectors of parameters containing music features. The Support Vector Machine (SVM) classifier and co-training method adapted for the standard SVM are involved in genre classification. Also, some additional experiments are performed using reduced feature vectors, which improved the overall result. Finally, results and conclusions drawn from the study are presented, and suggestions for further work are outlined.