bluuebunny/crossref_metadata_2025_split huggingface dataset:
Duplicate internal auditory canals with facial and vestibulocochlear nerve dysfunction
Authors: Kew T Y , Abdullah A 
Published: August 2011

AbstractObjective:We report an extremely rare case of duplication of the internal auditory canal associated with dysfunction of both the facial and vestibulocochlear nerves. We also review the literature regarding the integrity of the facial and vestibulocochlear nerves in such cases.Case report:A 34-year-old man presented with unilateral, right-sided, sensorineural hearing loss and facial nerve palsy since childhood. Facial nerve function was observed to be House–Brackmann grade III. Computed tomography and magnetic resonance imaging demonstrated ipsilateral duplicate, vacant internal auditory canals. Based on the clinical presentation, we interpreted these radiological findings as aplasia of the vestibulocochlear nerve and severe hypoplasia of the facial nerve.Conclusion:To our best knowledge, this is the first report of vestibulocochlear nerve aplasia and severe facial nerve hypoplasia in a case of ipsilateral duplication of the internal auditory canal. High resolution gradient echo magnetic resonance imaging sequences are advocated for assessment of neural integrity in patients with an abnormal internal auditory canal and facial and/or vestibulocochlear nerve dysfunction.
Functional results of pharyngo-laryngectomy and total laryngectomy: a comparison
Authors: Gadepalli C , de Casso C , Silva S , Loughran S , Homer J J 
Published: August 2011

AbstractObjective:To compare the key functional results (regarding swallowing and voice rehabilitation) in patients treated by pharyngo-laryngectomy with flap reconstruction, versus standard, wide-field, total laryngectomy.Method:We studied 97 patients who had undergone total laryngectomy and pharyngo-laryngectomy with flap reconstruction. The main outcome measures were swallowing (i.e. solid food, soft diet, fluid or enteral feeding) and fluent voice development.Results:There were 79 men and 18 women, with follow up of one to 19 years. Voice (p = 0.037) and swallowing (p = 0.041) results were significantly worse after circumferential pharyngo-laryngectomy than after non-circumferential pharyngo-laryngectomy. There was no significant difference in voice (p = 0.23) or swallowing (p = 0.655) results, comparing total laryngectomy and non-circumferential pharyngo-laryngectomy. The presence of a post-operative fistula significantly influenced voice (p = 0.001) and swallowing (p = 0.009) outcomes.Conclusion:The additional measures involved in pharyngo-laryngectomy do not confer any functional disadvantage, compared with total laryngectomy, but only if the procedure is non-circumferential. Functional results of circumferential pharyngo-laryngectomy are worse than those of both non-circumferential pharyngo-laryngectomy and total laryngectomy. If oncologically possible and safe, it is better to keep a pharyngo-laryngectomy non-circumferential.
The Pleasures and Anxieties of Being in the Middle: Emerging Middle-Class Identities in Urban South India
Authors: DICKEY SARA 
Published: August 2011

AbstractRecent economic changes in India have coincided with a dramatic change in the concept of a ‘middle class’ in the south Indian city of Madurai. Whereas previous sets of class identities were overwhelmingly dichotomous (for example, the rich and the poor, or the ‘big people’ and ‘those who have nothing’), the middle class has now become a highly elaborated component of local class structures and identities. It is also a contested category; moreover, its indigenous boundaries differ from those most often used by scholars, marketers, or policy-makers. Drawing from research over the past decade, this paper examines local definitions of ‘middleness’ and the moralized meanings ascribed to it. Whilst being ‘in the middle’ is a source of pride and pleasure, connoting both achievement and enhanced self-control, it is simultaneously a source of great tension, bringing anxiety over the critical and damaging scrutiny of onlookers. For each positive aspect of a middle-class identity that emphasizes security and stability, there is a negative ramification or consequence that highlights the precariousness and potential instability of middle-class life. In exploring each of these aspects, I pay attention to the explicitly performative features of class identities. I conclude by considering the epistemological and experiential insights we gain into the construction of emergent class categories by focusing on self-ascribed identities and their performance.
Do shared etiological factors contribute to the relationship between sexual orientation and depression?
Authors: Zietsch B. P. , Verweij K. J. H. , Heath A. C. , Madden P. A. F. , Martin N. G. , Nelson E. C. , Lynskey M. T. 
Published: August 2011

BackgroundGays, lesbians and bisexuals (i.e. non-heterosexuals) have been found to be at much greater risk for many psychiatric symptoms and disorders, including depression. This may be due in part to prejudice and discrimination experienced by non-heterosexuals, but studies controlling for minority stress, or performed in very socially liberal countries, suggest that other mechanisms must also play a role. Here we test the viability of common cause (shared genetic or environmental etiology) explanations of elevated depression rates in non-heterosexuals.MethodA community-based sample of adult twins (n=9884 individuals) completed surveys investigating the genetics of psychiatric disorder, and were also asked about their sexual orientation. Large subsets of the sample were asked about adverse childhood experiences such as sexual abuse, physical abuse and risky family environment, and also about number of older brothers, paternal and maternal age, and number of close friends. Data were analyzed using the classical twin design.ResultsNon-heterosexual males and females had higher rates of lifetime depression than their heterosexual counterparts. Genetic factors accounted for 31% and 44% of variation in sexual orientation and depression respectively. Bivariate analysis revealed that genetic factors accounted for a majority (60%) of the correlation between sexual orientation and depression. In addition, childhood sexual abuse and risky family environment were significant predictors of both sexual orientation and depression, further contributing to their correlation.ConclusionsNon-heterosexual men and women had elevated rates of lifetime depression, partly due to shared etiological factors, although causality cannot be definitively resolved.
‘The Taste Buddies’: participation and empowerment in a residential home for older people
Authors: BAUR VIVIANNE , ABMA TINEKE 
Published: August 2011

ABSTRACTThe active participation and autonomy of older people living in residential homes is considered to be problematic. However, in our action research project conducted in a Dutch residential care organisation we found ways to enhance residents' direct participation. This form of participation is grounded in deliberative and participatory approaches to democracy. In this article we describe how a group of seven residents (all female), calling themselves ‘The Taste Buddies’, developed a joint vision on how meals could be improved. The facilitation of this process enhanced this group's empowerment, building interpersonal trust, social identity and joint purpose. We will take the reader through this process and discuss the developments of these older women against the background of relational empowerment. We argue that resident participation as partnership with employees and managers starts with relational empowerment among residents themselves (enclave deliberation). This process is non-linear and requires time and constructive facilitation.
Research into practice: Vocabulary
Authors: Nation I. S. P. 
Published: August 2011

Editorial noteThis new strand in the journal provides a space for contributors to present a personal stance either on future research needs or on the perceived current applications of research in the classroom. Like much of our current content, it echoes the historical uniqueness of this journal in terms of its rich and expert overview of recent research in the field of L2 teaching and learning. However, this new strand takes such research as its starting point and attempts to look forward, using these findings both to debate their application in the language learning classroom and also to suggest where research would be best directed in the future. Thus, the objective of both types of paper is eminently practical: contributors to the research agenda will present suggestions for what research might usefully be undertaken, given what is currently known or what is perceived to be necessary. In the research into practice papers there will be critical appraisal both of what research is, and is not, getting through to the language learning classroom, policy making, curriculum design, evaluation of teaching and/or assessment programmes, and practical suggestions made for improving such outcomes.This article is a personal view of the application of research on vocabulary to teaching and how there are three different types or categories of relationship between that research and the teaching to which it is applied: first, where the research is not applied or not applied well, second, where it is reasonably well applied, and third, where it is over-applied. For each of these three categories, I look at what I consider to be the most important areas of research and suggest why they fit into that category. The topics covered include planning vocabulary courses, distinguishing high frequency and low frequency words, extensive reading, the deliberate learning of vocabulary, academic vocabulary and vocabulary teaching.
Supplementation with the histone deacetylase inhibitor trichostatin A during in vitro culture of bovine embryos
Authors: Oliveira Clara Slade , Saraiva Naiara Zoccal , de Souza Marcela Maria , de Almeida Drummond Tetzner Tatiane , de Lima Marina Ragagnin , Garcia Joaquim Mansano 
Published: August 2011

SummaryTrichostatin A (TSA) is a histone deacetylase inhibitor that induces histone hyperacetylation and increases gene expression levels. The aim of the present study was to establish a suitable condition for the use of TSA in in vitro cultures of bovine embryos, and to determine whether TSA would increase blastocyst rates by improvement of chromatin remodelling during embryonic genome activation and by increasing the expression of crucial genes during early development. To test this hypothesis, 8-cell embryos were exposed to four concentrations of TSA for different periods of time to establish adequate protocols. In a second experiment, three experimental groups were selected for the evaluation of embryo quality based on the following parameters: apoptosis, total cell number and blastocyst hatching. TSA promoted embryonic arrest and degeneration at concentrations of 15, 25 and 50 nM. All treated groups presented lower blastocyst rates. Exposure of embryos to 5 nM for 144 h and to 15 nM for 48 h decreased blastocyst hatching. However, the terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assay (TUNEL) assay revealed similar apoptosis rates and total cell numbers in all groups studied. Although, in the present study, TSA treatment did not improve the parameters studied, the results provided background information on TSA supplementation during in vitro culture of bovine embryos and showed that embryo quality was apparently not affected, despite a decrease in blastocyst rate after exposure to TSA.
Effect of cryoprotectants on the survival of cascudo preto (Rhinelepis aspera) embryos stored at –8°C
Authors: Fornari Darci Carlos , Ribeiro Ricardo Pereira , Streit Danilo , Godoy Leandro Cesar , Neves Patrícia Ribeiro , de Oliveira Diego , Sirol Rodolfo Nardez 
Published: August 2011

SummaryCryopreservation of germplasm provides a promising method to preserve fish genetic material, which is of great importance in preservation of species diversity, aquaculture, and management of fish models used in biomedical research. In the present study, cryopreservation of Rhinelepis aspera embryos, a Brazilian endangered species, was studied for the first time using a short-term cooling protocol. Embryos at blastoporous closing stage were selected, placed in 6-ml glass vials and stored at −8°C for 6 h in 10 different cryoprotectant solutions: S1 (17.1% sucrose + 9% methanol); S2 (17.1% sucrose + 9% DMSO); S3 (8.5% sucrose + 8.5% glucose + 9% methanol); S4 (8.5% sucrose + 8.5% glucose + 9% DMSO); S5 (17.1% sucrose + 9% ethylene glycol); S6 (8.5% sucrose + 8.5% glucose + 9% ethylene glycol); S7 (17.1% sucrose + 4.5% methanol + 4.5% DMSO); S8 (17.1% sucrose + 4.5% methanol + 4.5% ethylene glycol); S9 (17.1% sucrose + 4.5% DMSO + 4.5% ethylene glycol); and S10 (100% water). Embryo viability was assessed by hatching rate, counting live larvae and number of failed eggs under a stereomicroscope. The results showed that only the cryoprotectant solutions that contained methanol associated to sucrose (S1, S7 and S8) provided partial protection of Rhinelepis aspera embryos from cold damage (over 50% hatching rate in S1), while the use of DMSO and ethylene glycol, isolated or in combination, resulted in no hatching rate. Further studies are needed in order to extend the storage time and to improve the hatching rate for the species.
Artificial oocyte activation and human failed-matured oocyte vitrification followed byin vitromaturation
Authors: Liu Y. , Cao Y.X. , Zhang Z.G. , Xing Q. 
Published: August 2011

SummaryThe investigation presented in this paper was conducted on the effect of oocytes activation on frozen–thawed human immature oocytes followed byin vitromaturation (IVM). A total of 386 failed-matured oocytes (germinal vesicle (GV) and metaphase I (MI) stages) was randomly divided into two groups: fresh group and vitrification group, GV group and MI group, respectively). The matured oocytes were subject to intracytoplasmic sperm injection (ICSI) after IVM had been carried out. The vitrification group was randomly divided into two groups: controlled and artificial oocyte activation (AOA). The injected oocytes in the controlled group were cultured in cleavage medium. The AOA group oocytes were activated by exposing them to 7% anhydrous alcohol for 6 min then cultured in cleavage medium as well. The rates of fertilization and early embryonic development were compared between the controlled and AOA groups. In MI vitrification group, the high-quality embryo formation rate and blastocyst formation rate were significantly higher in the AOA group than in the controlled group (P< 0.01). In the GV vitrification group, the high-quality embryo formation rate was significantly higher in the AOA group than in the controlled group (P< 0.05). These results indicate that AOA may be good for early embryonic development of vitrified immature human oocytes.
Origin of solar magnetism
Authors: Choudhuri Arnab Rai 
Published: August 2011

AbstractThe most promising model for explaining the origin of solar magnetism is the flux transport dynamo model, in which the toroidal field is produced by differential rotation in the tachocline, the poloidal field is produced by the Babcock–Leighton mechanism at the solar surface and the meridional circulation plays a crucial role. After discussing how this model explains the regular periodic features of the solar cycle, we come to the questions of what causes irregularities of solar cycles and whether we can predict future cycles. Only if the diffusivity within the convection zone is sufficiently high, the polar field at the sunspot minimum is correlated with strength of the next cycle. This is in conformity with the limited available observational data.
Diagnostics for spectropolarimetry and magnetography
Authors: del Toro Iniesta Jose Carlos , Pillet Valentín Martínez 
Published: August 2011

AbstractAn assessment on the capabilities of modern spectropolarimeters and magnetographs is in order since most of our astrophysical results rely upon the accuracy of the instrumentation and on the sensitivity of the observables to variations of the sought physical parameters. A contribution to such an assessment will be presented in this talk where emphasis will be made on the use of the so-called response functions to gauge the probing capabilities of spectral lines and on an analytical approach to estimate the uncertainties in the results in terms of instrumental effects. The Imaging Magnetograph eXperiment (IMaX) and the Polarimetric and Helioseismic Imager (PHI) will be used as study cases.
The evolution of stellar surface activity and possible effects on exoplanets
Authors: Giampapa Mark S. 
Published: August 2011

AbstractThe evolution of stellar activity involves a complex interplay between the interior dynamo mechanism, the emergent magnetic field configurations and their coupling with stellar winds, the subsequent angular momentum evolution, and fundamental stellar parameters. The discussion of the evolution of surface activity will emphasize the main sequence phase, from the ZAMS to stars of solar-age. We will focus particularly on the evolution of the fractional area coverages of spots on the surfaces of solar-type stars. We fit an empirical relation to the fractional mean spot area coverage as a function of age for ages greater than the Pleiades of the form log(MeanSpotCoverage) = 0.90(±0.26) − 1.03(±0.10)log(Age), where Age is in Myr. In addition, we summarize the relative evolution of radiative emissions in various short wavelength bands that are associated with stellar magnetic field-related activity. Possible effects on young planetary atmospheres also are appropriate to consider given that stellar surface activity is the origin of the high-energy component of the ambient radiation and particle fields in which planetary atmosphere evolution occurs.
Time series photometry and starspot properties
Authors: Oláh Katalin 
Published: August 2011

AbstractSystematic efforts of monitoring starspots from the middle of the XXth century, and the results obtained from the datasets, are summarized with special focus on the observations made by automated telescopes. Multicolour photometry shows correlations between colour indices and brightness, indicating spotted regions with different average temperatures originating from spots and faculae. Long-term monitoring of spotted stars reveals variability on different timescales.On the rotational timescale new spot appearances and starspot proper motions are followed from continuous changes of light curves during subsequent rotations. Sudden interchange of the more and less active hemispheres on the stellar surfaces is the so called flip-flop phenomenon. The existence and strength of the differential rotation is seen from the rotational signals of spots being at different stellar latitudes.Long datasets, with only short, annual interruptions, shed light on the nature of stellar activity cycles and multiple cycles. The systematic and/or random changes of the spot cycle lengths are discovered and described using various time-frequency analysis tools. Positions and sizes of spotted regions on stellar surfaces are calculated from photometric data by various softwares. From spot positions derived for decades, active longitudes on the stellar surfaces are found, which, in case of synchronized eclipsing binaries can be well positioned in the orbital frame, with respect to, and affected by, the companion stars.
Exploring the deep convection and magnetism of A-type stars
Authors: Featherstone Nicholas A. , Browning Matthew K. , Brun Allan Sacha , Toomre Juri 
Published: August 2011

AbstractA-type stars have both a near-surface layer of fast convection that can excite acoustic modes and a deep zone of core convection whose properties may be probed with asteroseismology. Many A-type stars also exhibit large magnetic spots that are often attributed to surviving primordial fields of global scale in the intervening radiative zone. We have explored the potential for core convection in rotating A-type stars to build strong magnetic fields through dynamo action. These 3-D simulations using the ASH code provide guidance on the nature of differential rotation and magnetic fields that may be present in the deep interiors of these stars, thus informing the asteroseismic deductions now becoming feasible. Our models encompass the inner 30% by radius of a two solar mass A-type star, rotating at four times the solar rate and capturing the convective core and a portion of the overlying radiative envelope. Convection in these stars drives a strong retrograde differential rotation and yields a core that is prolate in shape. When dynamo action is admitted, the convection generates strong magnetic fields largely in equipartition with the dynamics. Remarkably, introducing a modest but large-scale external field threading the radiative envelope (which may be of primordial origin) can substantially alter the turbulent dynamics of the convective interior. The resulting convection involves a complex assembly of helical rolls that link distant portions of the core and stretch and advect magnetic field, ultimately yielding magnetic fields of super-equipartition strength.
Chemical spots and their dynamical evolution on HgMn stars
Authors: Korhonen Heidi , Hubrig Swetlana , Briquet Maryline , González Federico , Savanov Igor 
Published: August 2011

AbstractOur recent studies of late B-type stars with HgMn peculiarity revealed for the first time the presence of fast dynamical evolution of chemical spots on their surfaces. These observations suggest a hitherto unknown physical process operating in the stars with radiative outer envelopes. Furthermore, we have also discovered existence of magnetic fields on these stars that have up to now been thought to be non-magnetic. Here we will discuss the dynamical spot evolution on HD 11753 and our new results on magnetic fields on AR Aur.
Differential rotation on the young solar analogue V889 Herculis
Authors: Kővári Zsolt , Frasca Antonio , Biazzo Katia , Vida Krisztián , Marilli Ettore , Çakırlı Ömür 
Published: August 2011

AbstractV889 Herculis is one of the brightest single early-G type stars, a young Sun, that is rotating fast enough (Prot =1.337 days) for mapping its surface by Doppler Imaging. The 10 FOCES spectra collected between 13-16 Aug 2006 at Calar Alto Observatory allowed us to reconstruct one single Doppler image for two mapping lines. The Fe i-6411 and Ca i-6439 maps, in a good agreement, revealed an asymmetric polar cap and several weaker features at lower latitudes. Applying the sheared-image method with our Doppler reconstruction we perform an investigation to detect surface differential rotation (DR). The resulting DR parameter, δΩ/Ω≈0.009 of solar type, is compared to previous studies which reported either much stronger shear or comparably weak DR, or just preferred rigid rotation. Theoretical aspects are also considered and discussed.