bluuebunny/crossref_metadata_2025_split huggingface dataset:
No association between posture and musculoskeletal complaints in a professional bassist sample
Authors: Woldendorp K.H. , Boonstra A.M. , Tijsma A. , Arendzen J.H. , Reneman M.F. 
Published: September 2015

AbstractBackgroundProfessional musicians receive little attention in pain medicine despite reports of high prevalence of musculoskeletal complaints. This study aims to investigate the association between work‐related postures and musculoskeletal complaints of professional bass players.MethodParticipants were 141 professional and professional student double bassists and bass guitarists. Data about self‐reported functioning, general and mental health status, location and intensity of musculoskeletal complaints and psychosocial distress were collected online with self constructed and existing questionnaires. Logistic regression analyses were performed to analyse associations between work‐related postural stress (including type of instrument and accompanying specific exposures) and physical complains, adjusted for potential confounders.ResultsLogistic regression analyses revealed no association between complaints and the playing position of the left shoulder area in double bassists (p = 0.30), the right wrist area in the bass guitarists (p = 0.70), the right wrist area for the German versus French bowing style (p = 0.59).ConclusionAll three hypotheses were rejected. This study shows that in this sample of professional bass players’ long‐lasting exposures to postural stress were not associated with musculoskeletal complaints. This challenges a dominant model in pain medicine to focus on ergonomic postures.
Tailoring MoO2/Graphene Oxide Nanostructures for Stable, High‐Density Sodium‐Ion Battery Anodes
Authors: Huang Jianfeng , Xu Zhanwei , Cao Liyun , Zhang Qinglin , Ouyang Haibo , Li Jiayin 
Published: September 2015

AbstractA preform‐decomposition process is employed to prepare a composite of MoO2 nanoparticles (≈100 nm) anchored on graphene oxide (MoO2/GO) for sodium‐ion battery anodes. The discharge gravimetric (volumetric) capacity of the MoO2/GO is 483 mAh g−1 (by active material ≈2318 mAh cm−3) at the current density of 100 mA g−1 after 10 cycles. After 100 cycles, the discharge gravimetric (volumetric) capacity was maintained at 345 mAh g−1 (≈1656 mAh cm−3) and stabilized. During the first 1000 cycles, the capacity degradation is only 1.9 % for each 100 cycles, and the electrode is still able to deliver 276 mAh g−1 after 1000 cycles. Moreover, the nanostructures are able to withstand high rate cycling, the capacity can be fully recovered after being cycled at a rate as high as 2000 mA g−1. The promising electrochemical performance can be attributed to the high electronic conductivity of MoO2 and the connected nanostructures, which facilitate both fast electronic and ionic transport.
Activated carbons prepared from Thymelaea hirsuta wood: Sustainable adsorbents for polyvinyl alcohol
Authors: Omri Abdessalem , Benzina Mourad 
Published: September 2015

In this study, activated carbon as novel adsorbent was prepared from low cost and locally available source such as Thymelaea hirsuta wood. Characterization of the adsorbent was carried out and BET surface area of the adsorbent was found to be 1496 m2/g. Subsequently, the Thymelaea hirsuta wood activated carbon (TWAC) was applied for the removal of polyvinyl alcohol from aqueous solutions. It was found that adsorption efficiency significantly depend to the level of initial solution pH and polymer concentration, metal addition, temperature, and adsorption time. Among the various conventional isotherm models, Langmuir is more suitable for analyzing the explanation data. The process of removal of polyvinyl alcohol was better governed by second order kinetics with a rate constant of 0.0079 g mg−1 min at initial concentration 20 mg/L. The calculated thermodynamic parameters indicate the entropy‐driven and endothermic nature of polymer adsorption process. For desorption study, more than 86.2% of polyvinyl alcohol could be desorbed from the adsorbent. © 2015 American Institute of Chemical Engineers Environ Prog, 35: 70–79, 2016
Effectiveness and toxicity of hypofractionated high‐dose intensity‐modulated radiotherapy versus 2‐ and 3‐dimensional radiotherapy in incurable head and neck cancer
Authors: van Beek Kirsty M. , Kaanders Johannes H. A. M. , Janssens Geert O. , Takes Robert P. , Span Paul N. , Verhoef Cornelia G. 
Published: September 2015

BackgroundThis retrospective study evaluates efficacy and tolerability of high‐dose hypofractionated radiotherapy (RT) in patients with head and neck cancer.MethodsAll patients with head and neck cancer treated between September 2003 and September 2013 with 12 × 4 Gy RT were included. Two and 3D‐RT or intensity‐modulated radiotherapy (IMRT) were used. Overall survival (OS), tumor response, and palliative effect were evaluated.ResultsPalliative effect occurred in 63% of 81 included patients, lasted a median of 4.6 months, and was correlated with tumor response (p = .006). Median OS was 7.2 months. Confluent mucositis occurred more often in patients treated with 2D/3D‐RT than IMRT (26% vs 44%; p = .04) and lasted for a median of 2 weeks.ConclusionHigh‐dose hypofractionated RT resulted in meaningful palliation in 63%, lasting for almost 5 months. IMRT should be the technique of choice, as it results in less high‐grade toxicity. The 12 × 4 schedule should be opted for patients with reasonable functional capacities and a life expectancy of >6 months. © 2015 Wiley Periodicals, Inc. Head Neck 38: E1264–E1270, 2016
Further Higher Moments in Portfolio Selection and A Priori Detection of Bankruptcy, Under Multi‐layer Perceptron Neural Networks, Hybrid Neuro‐genetic MLPs, and the Voted Perceptron
Authors: Loukeris Nikolaos , Eleftheriadis Iordanis 
Published: September 2015

AbstractA novel approach on the portfolio selection theory is given with regard to advanced utility performance that incorporates more accurate investor patterns up to the fifth moment. Bankruptcy detection, a priori, on an investment portfolio of stocks is a significant process that can eliminate potential losses. Even in case of corporate fraud, efficient funds can maximize their net present value by reforming the assets. Multi‐layer perceptron neural networks are compared with hybrids of neuro‐genetic multi‐layer perceptrons and the voted‐perceptron algorithm to define the most efficient classification method into the perceptrons family, implementing extensive network topologies. Copyright © 2015 John Wiley & Sons, Ltd.
Short‐Term Repeatability of Magnetic Resonance Elastography at 3.0T: Effects of Motion‐Encoding Gradient Direction, Slice Position, and Meal Ingestion
Authors: Zhang Jiming , Arena Claudio , Pednekar Amol , Lambert Brenda , Dees Debra , Lee Vei Vei , Muthupillai Raja 
Published: September 2015

PurposeMagnetic resonance elastography (MRE) can estimate liver stiffness (LS) noninvasively. We prospectively assessed whether motion‐encoding gradient (MEG) direction, slice position, or high‐caloric food intake affects the repeatability of MRE measurements of LS.Materials and MethodsTwenty healthy volunteers (8 women, 12 men; age, 48 ± 12 years) were imaged in a 3.0T scanner at four timepoints: twice after overnight fasting (B1, B2) and twice after consuming a 1050‐calorie standardized meal (A1, A2; after 30 and 60 min, respectively). Each session comprised sequential MRE acquisitions in which MEG was applied in three orthogonal directions with three slices positioned over the liver for each. Between sessions, the participants were repositioned to assess test–retest reproducibility.ResultsThe LS measurements before/after food intake were 3.36 ± 1.31 kPa/3.22 ± 1.03 kPa, 2.04 ± 0.33 kPa/2.27 ± 0.38 kPa, and 2.47 ± 0.50 kPa/2.64 ± 0.76 kPa for MEG superimposed along the anterior–posterior (AP), foot–head (FH), and right–left (RL) directions, respectively. Before and after food intake, LS estimates were lower and more reproducible (<10% coefficient of variation) when the MEG was in the FH direction, not the AP or RL direction. Liver stiffness estimates were significantly elevated after meal consumption when the MEG was in the FH direction (P < 0.05 for B1 vs. A1, B1 vs. A2, B2 vs. A1, and B2 vs. A2).ConclusionMRE estimates of LS were highly reproducible, particularly when MEG was applied in the FH direction, suggesting that this method could be used for long‐term monitoring of antifibrotic therapy without repeated biopsies. High‐caloric food intake resulted in slightly elevated LS on MRE. J. MAGN. RESON. IMAGING 2016;43:704–712.
Pharmacokinetic modeling of multislice dynamic contrast‐enhanced MRI in normal‐healing radial fractures: A pilot study
Authors: Lewis Mark , Ebreo Darren , Malcolm Paul N. , Greenwood Richard , Patel Amratlal D. , Kasmai Bahman , Johnson Glyn , Toms Andoni P. 
Published: September 2015

PurposeTo define the range of quantitative pharmacokinetic parameters in normal‐healing bone with dynamic contrast‐enhanced magnetic resonance imaging (DCE‐MRI). DCE‐MRI is an established technique for characterizing abnormal tissue microvasculature within solid tumors, but has also shown promise for assessing bone and bone marrow.Materials and MethodsIn this study ethical approval for eight patients was obtained. Inclusion criteria were an extra‐articular distal radial fracture in patients aged 20–50 years which had united by 6 weeks in plaster cast. This was assessed by an experienced orthopedic surgeon. DCE‐MRI was performed at 1.5T 6 weeks after initial injury. The transfer constant (Ktrans), transfer rate (Kep), and initial area under the curve (IAUC) values for the fracture site and adjacent marrow were obtained for each patient.ResultsThe mean T1, Ktrans, Kep, and IAUC at the fracture site were 1713 (standard deviation [SD] 645), 0.09 (SD 0.07), 0.17 (SD 0.17) and 4.9 (SD 4.4). The relative standard deviation (RSD) for the fracture site ranged from 0.38 to 0.97 and for the adjacent marrow ranged from 0.95–3.88. Within each patient the range of RSDs was 0.04–0.42 for T1, 0.26–0.91 for Ktrans, 0.14–1.06 for Kep, and 0.35–0.96 for the IAUC.ConclusionPharmacokinetic measures of perfusion can be obtained from healing fractures using DCE‐MRI with “excellent” intraclass correlation coefficients for inter‐ and intrarater reliability. The use of these perfusion parameters is limited by wide patient‐to‐patient variation and slice‐to‐slice variation within patients. J. MAGN. RESON. IMAGING 2016;43:611–619.
The effect of X‐ray beam distortion on the Edwards Sapien XT™ trans‐catheter aortic valve replacement prosthesis
Authors: Crowhurst James A. , Poon Karl K. , Murdoch Dale , Incani Alexander , Raffel Owen C. , Liddicoat Annelise , Walters Darren 
Published: September 2015

AbstractIntroductionProfiling the Aortic root perpendicular to the fluoroscopic image plane will achieve a more successful implant position for trans‐catheter aortic valve replacement (TAVR). This study aimed to investigate whether the divergent nature of the X‐ray beam from the C‐arm altered the appearance of the TAVR device.MethodsUnder bench‐top testing, a 23, 26 and 29 mm Edwards Sapien XT valve was positioned coaxially at the bottom of a fluoroscopic image utilising 22 and 32 cm fields of view (FOV). The table was then moved so that the valve was positioned at the top of the image. The valve's appearance was scored using a previously published three tier classification tool (excellent, satisfactory and poor) and quantified with measurements. The number of degrees of C‐arm rotation that were required to bring the valve back to a coaxial appearance was recorded.ResultsWhen using the 32 cm FOV, the valve's appearance changes from excellent to satisfactory. When a 22 cm FOV was used, the change is less marked. More C‐arm rotation is required to bring the appearance back to coaxial with the 32 cm FOV.ConclusionNot maintaining the valve in the centre of the image can distort the valves appearance. This has the potential to affect the final implantation depth.
Tumor volume as a prognostic factor for local control and overall survival in advanced larynx cancer
Authors: Timmermans Adriana J. , Lange Charlotte A. H. , de Bois Josien A. , van Werkhoven Erik , Hamming‐Vrieze Olga , Hilgers Frans J. M. , van den Brekel Michiel W. M. 
Published: September 2015

Objectives/HypothesisTumor volume has been postulated to be an important prognostic factor for oncological outcome after radiotherapy or chemoradiotherapy. This postulate was retrospectively investigated in a consecutively treated cohort of T3–T4 larynx cancer patients.Study DesignRetrospective cohort study.MethodsFor 166 patients with T3–T4 larynx cancer (1999–2008), pretreatment computed tomography and magnetic resonance imaging scans were available for tumor volume delineation. Patients were treated with radiotherapy, chemoradiotherapy, or total laryngectomy with postoperative radiotherapy. Both a dedicated head and neck radiologist and the first author determined all tumor volumes. Statistical analysis was by Kaplan‐Meier plots and Cox proportional hazard models.ResultsPatients with T3 larynx cancer had significantly smaller tumor volumes than patients with T4 larynx cancer (median = 8.1 cm3 and 15.8 cm3, respectively; P < .0001). In the group treated with total laryngectomy and postoperative radiotherapy, no association was found between tumor volume and local or locoregional control or overall survival. In the group treated with radiotherapy, a nonsignificant trend was observed between local control and tumor volume. In the chemoradiotherapy group, however, a significant impact of tumor volume was found on local control (hazard ratio = 1.07; 95% confidence interval = 1.01‐1.13; P = .028).ConclusionsTumor volume was not significantly associated with local control, locoregional control, or overall survival in the surgically treated group. In the group treated with radiotherapy, there was no statistically significant association, but a trend was observed between local control and tumor volume. Only in patients treated with concurrent chemoradiotherapy was a significant impact of tumor volume on local control found.Level of Evidence4. Laryngoscope, 126:E60–E67, 2016
A systematic review of the effect of different crimping techniques in stapes surgery for otosclerosis
Authors: Wegner Inge , Swartz Justin E. , Bance Manohar L. , Grolman Wilko 
Published: September 2015

Objectives/HypothesisTo evaluate the effect of crimping techniques in stapes surgery for otosclerosis patients measured by hearing outcomes on pure‐tone audiometry.Data SourcesPubMed, EMBASE, and the Cochrane Library.MethodsA systematic search was conducted. Studies comparing the effect of different crimping methods on pure‐tone audiometric results in patients undergoing stapes surgery for otosclerosis were included. Relevance and risk of bias were assessed. Absolute risks and risk differences, means and mean differences, and 95% confidence intervals were extracted or calculated for the primary and secondary outcomes, which were air‐bone gap closure to 10 dB or less, mean postoperative air‐bone gap, and postoperative sensorineural hearing loss.ResultsTwenty‐two studies with moderate or high risk of bias were included for data extraction. Air‐bone gap closure to 10 dB or less was assessed in 17 studies and mean postoperative air‐bone gap in 20 studies. The hearing outcomes did not consistently favor one crimping method. However, the differences that were statistically significant were consistently in favor of heat crimping over manual and no crimping (difference in air‐bone gap closure to 10 dB or less ranged between 22% and 42% in these studies and difference in mean postoperative air‐bone gap between 2.8 dB and 7.4 dB) and in favor of manual crimping over no crimping (30% difference in air‐bone gap closure to 10 dB or less and difference in mean postoperative air‐bone gap between 2.6 dB and 6.0 dB).ConclusionModerate to high risk of bias and inconsistent results characterize the current evidence. Laryngoscope, 126:1207–1217, 2016
Accurate grading of brain gliomas by soft independent modeling of class analogy based on non‐negative matrix factorization of proton magnetic resonance spectra
Authors: Ghasemi K. , Khanmohammadi M. , Saligheh Rad H. 
Published: September 2015

AbstractHydrogen magnetic resonance spectroscopy (1H‐MRS) is a non‐invasive technique which provides a ‘frequency‐signal intensity’ spectrum of biochemical compounds of tissues in the body. Although this method is currently used in human brain studies, accurate classification of in‐vivo 1H‐MRS is a challenging task in the diagnosis of brain tumors. Problems such as overlapping metabolite peaks, incomplete information on background component and low signal‐to‐noise ratio disturb classification results of this spectroscopic method. This study presents an alternative approach to the soft independent modeling of class analogy (SIMCA) technique, using non‐negative matrix factorization (NMF) for dimensionality reduction. In the adopted strategy, the performance of SIMCA was improved by application of a robust algorithm for classification in the presence of noisy measurements. Total of 219 spectra from two databases were taken by water‐suppressed short echo‐time 1H‐MRS, acquired from different subjects with different stages of glial brain tumors (Grade II (26 cases), grade III (24 cases), grade IV (41 cases), as well as 25 healthy cases). The SIMCA was performed using two approaches: (i) principal component analysis (PCA) and (ii) non‐negative matrix factorization (NMF), as a modified approach. Square prediction error was considered to assess the class membership of the external validation set. Finally, several figures of merit such as the correct classification rate (CCR), sensitivity and specificity were calculated. Results of SIMCA based on NMF showed significant improvement in percentage of correctly classified samples, 91.4% versus 83.5% for PCA‐based model in an independent test set. Copyright © 2015 John Wiley & Sons, Ltd.
Nonhierarchical multi‐model fusion using spatial random processes
Authors: Chen Shishi , Jiang Zhen , Yang Shuxing , Apley Daniel W. , Chen Wei 
Published: September 2015

SummaryNew model fusion techniques based on spatial‐random‐process modeling are developed in this work for combining multi‐fidelity data from simulations and experiments. Existing works in multi‐fidelity modeling generally assume a hierarchical structure in which the levels of fidelity of the simulation models can be clearly ranked. In contrast, we consider the nonhierarchical situation in which one wishes to incorporate multiple models whose levels of fidelity are unknown or cannot be differentiated (e.g., if the fidelity of the models changes over the input domain). We propose three new nonhierarchical multi‐model fusion approaches with different assumptions or structures regarding the relationships between the simulation models and physical observations. One approach models the true response as a weighted sum of the multiple simulation models and a single discrepancy function. The other two approaches model the true response as the sum of one simulation model and a corresponding discrepancy function, and differ in their assumptions regarding the statistical behavior of the discrepancy functions, such as independence with the true response or a common spatial correlation function. The proposed approaches are compared via numerical examples and a real engineering application. Furthermore, the effectiveness and relative merits of the different approaches are discussed. Copyright © 2015 John Wiley & Sons, Ltd.
Hunger and satiety responses to high‐fat meals of varying fatty acid composition in women with obesity
Authors: Stevenson Jada L. , Clevenger Hui C. , Cooper Jamie A. 
Published: September 2015

ObjectiveDetermine subjective and physiological appetite responses and ad libitum intake to high‐fat (HF) meals rich in either monounsaturated (MUFAs), polyunsaturated (PUFAs), or saturated fatty acids (SFAs) in women with obesity.MethodsIn this single‐blind crossover study, three HF meals (70% of energy) rich in MUFAs, PUFAs, or SFAs in 16 women with obesity were tested. At each visit, anthropometrics and a fasting blood sample were collected. Participants then consumed one of the HF meals, and postprandial blood draws and visual analog scale (VAS) measures were collected over 5 h. An ad libitum buffet lunch was provided 5 h after the HF meal.ResultsDecrease in ghrelin was significantly greater for PUFA (P < 0.05) and MUFA (P < 0.01) vs. SFA while the increase in peptide YY was significantly greater for PUFA vs. both SFA and MUFA (P < 0.05). Change in glucagon‐like peptide‐1, VAS measurements, or total energy consumed at the buffet showed no differences between HF meals (ns).ConclusionsFatty acid composition differentially affected physiological markers of hunger and satiety. However, it was unable to show changes in subjective appetite ratings or changes in energy intake when alterations were made to fatty acid composition from an acute HF meal.
Quantenphysik angezapft
Authors: Rosenow Bernd 
Published: September 2015

AbstractEine normale Flüssigkeit beginnt schneller zu fließen, wenn der sie begrenzende Kanal sich verengt. Aber was passiert, wenn eine Röhre so unglaublich eng ist, dass sich nur ein paar Atome von supraflüssigem Helium auf einmal durch die Verengung quetschen können? Unserem Team von der kanadischen McGill‐Universität in Zusammenarbeit mit Theoretikern an der University of Vermont und der Universität Leipzig gelang ein solches Experimente mit einem nur 3,1 nm dünnen Kanal. Erstaunlicherweise verlangsamte sich die Strömung.
Resonanzen mit Spectrum View Plus messen
Authors: Hirth Michael , Kuhn Jochen , Wilhelm Thomas 
Published: September 2015

AbstractDer Mensch ist ständig Geräuschen und Klängen ausgesetzt. Die subjektiv verschiedenen Schallereignisse unterscheiden sich objektiv insbesondere in deren Frequenzzusammensetzung und der Dynamik der einzelnen Frequenzbestandteile. Die Untersuchung dieser spektralen Zusammensetzung von Schall ist heute mit mobilen Endgeräten möglich [1], wie der iOS‐App Spectrum View Plus.
Sterne, Sterbetabellen und Kriminalstatistiken
Authors: Loos Andreas 
Published: September 2015

AbstractBereits als Schüler entfaltet der Gesuchte ein ausgeprägtes mathematisches Talent, gilt aber als vielseitig begabt. Als junger Mann zeichnet er, dichtet und übersetzt Werke von Lord Byron und Friedrich Schiller ins Französische und schreibt gemeinsam mit einem Freund ein Opernlibretto. Doch es sind die Zahlen, die es ihm besonders angetan haben: Massenhaft auftretende Zahlen, die die Massen beschreiben sollen. Und nicht zuletzt gehört sein Herz den Sternen.