bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the shedding of three β‐herpesviruses in urine and saliva of children with renal disease
Authors: Yamamoto Yasuto , Morooka Masashi , Hashimoto Shuji , Ihra Masaru , Yoshikawa Tetsushi 
Published: October 2013

AbstractCytomegalovirus (CMV), human herpesvirus 6 (HHV‐6) and 7 (HHV‐7) are important pathogens in immunocompromised patients. To elucidate the kinetics of the three β‐herpesviruses in saliva and urine samples were collected serially from children with renal diseases. Twenty children with renal diseases were enrolled in this study. A total of 240 saliva and urine samples were collected monthly from the patients over a 1‐year period. Viral DNAs loads were measured by real‐time PCR. In 10 CMV seropositive patients CMV DNA was detected rarely in saliva and CMV DNA load was lower than the other two β‐herpesviruses DNA loads. All patients were seropositive for HHV‐6B and the virus was detected frequently in saliva. Two of 20 patients were HHV‐7 seronegative. High copies of viral DNA were detected continuously in saliva of the HHV‐7 seropositive patients. Although neither CMV nor HHV‐6B DNA load was different among the three renal diseases, HHV‐7 DNA load was different among the diseases (P = 0.039). HHV‐6B DNA loads were significantly higher in patients with immunosuppressive treatment compared to those without treatment (P = 0.013). Although CMV DNA was detected in urine samples collected from 5 of 10 CMV seropositive patients, HHV‐6B and HHV‐7 DNA were detected at relatively low frequencies in urine. No remarkable temporal associations between viral DNA excretion and proteinuria or immunosuppressive treatment were demonstrated. The pattern of viral DNA excretion in saliva and urine were different among the three viruses. No temporal correlation was observed between viral infection and renal diseases. J. Med. Virol. 86:505–511, 2014. © 2013 Wiley Periodicals, Inc.
Reconstructed bone chip detachment is a risk factor for sinusitis after transsphenoidal surgery
Authors: Hsu Yao‐Wen , Ho Ching‐Yin , Yen Yu‐Shu 
Published: October 2013

Objectives/HypothesisSphenoid sinusitis is a complication associated with endoscopic transsphenoidal pituitary surgery. Studies that address the relationship between methods of sellar defect reconstruction and postoperative sinusitis are rare. The purpose of this study was to investigate the incidence, the possible risk factors, and the causative pathogens of sphenoid sinusitis after endoscopic transsphenoidal pituitary surgery.Study DesignProspective cohort study.MethodsWe performed a prospective analysis of 182 patients with benign pituitary tumor who underwent endoscopic transsphenoidal pituitary surgery and sellar defect reconstruction with bone chip, from July 2008 through July 2011. All patients were followed up with nasal endoscopy for at least 6 weeks.ResultsFifty‐seven (31.3%) patients developed postoperative sphenoid sinusitis. Comparing the sinusitis and nonsinusitis groups, we found that bone chip detachment was a significant risk factor for postoperative sinusitis, with a relative risk of 2.86 (64.1% vs. 22.4%). The most common pathogens present in cases of postoperative sinusitis were methicillin‐sensitive Staphylococcus aureus, Pseudomonas aeruginosa, and methicillin‐resistant Staphylococcus aureus.ConclusionsRegular follow‐up with nasal endoscopy can prevent delayed diagnosis of postoperative sphenoid sinusitis. Culture‐directed antibiotics with aggressive endoscopic debridement are an effective treatment for these patients. An optimal reconstruction strategy should be further developed to reduce bone chip detachment and secondary sinusitis.Level of Evidence2b. Laryngoscope, 124:57–61, 2014
Spatial techniques applied to precipitation ensemble forecasts: from verification results to probabilistic products
Authors: Ben Bouallègue Zied , Theis Susanne E. 
Published: October 2013

ABSTRACTSpatial techniques have been developed to quantify the performance of a system beyond the classical point‐to‐point comparison with observations. Including spatial neighbourhood information in the verification process, the quality of a forecast can be better characterized. Guidance for the interpretation of deterministic forecasts can also be delivered. This paper investigates the application of spatial techniques to ensemble forecasts. The aim is to assess ensemble forecast skills better and to provide improved guidance to the forecasters in the form of refined probabilistic products. Two spatial techniques are applied to precipitation forecasts derived from an ensemble system at the convective scale (COSMO‐DE‐EPS). The first technique is a smoothing method which enlarges the ensemble sample size by neighbouring forecasts. The resulting forecasts are called fuzzy probabilistic forecasts. The second method is an upscaling procedure which modifies the reference area of the probabilities. Fuzzy and upscaled probabilistic forecasts are assessed over a 3 month period covering summer 2011. The impact of smoothing and upscaling is investigated for a range of neighbourhood sizes and spatial scales respectively. Based on the verification results, recommendations are drawn how to use these techniques in optimally presenting COSMO‐DE‐EPS probabilistic products to forecasters who issue weather warnings.
3D late gadolinium enhancement in a single prolonged breath‐hold using supplemental oxygenation and hyperventilation
Authors: Roujol Sébastien , Basha Tamer A. , Akçakaya Mehmet , Foppa Murilo , Chan Raymond H. , Kissinger Kraig V. , Goddu Beth , Berg Sophie , Manning Warren J. , Nezafat Reza 
Published: October 2013

PurposeTo evaluate the feasibility of three‐dimensional (3D) single breath‐hold late gadolinium enhancement (LGE) of the left ventricle (LV) using supplemental oxygen and hyperventilation and compressed‐sensing acceleration.MethodsBreath‐hold metrics [breath‐hold duration, diaphragmatic/LV position drift, and maximum variation of R wave to R wave (RR) interval] without and with supplemental oxygen and hyperventilation were assessed in healthy adult subjects using a real‐time single shot acquisition. Ten healthy subjects and 13 patients then underwent assessment of the proposed 3D breath‐hold LGE acquisition (field of view = 320 × 320 × 100 mm3, resolution = 1.6 × 1.6 × 5.0 mm3, acceleration rate of 4) and a free‐breathing acquisition with right hemidiaphragm navigator (NAV) respiratory gating. Semiquantitative grading of overall image quality, motion artifact, myocardial nulling, and diagnostic value was performed by consensus of two blinded observers.ResultsSupplemental oxygenation and hyperventilation increased the breath‐hold duration (35 ± 11 s to 58 ± 21 s; P < 0.0125) without significant impact on diaphragmatic/LV position drift or maximum variation of RR interval (both P > 0.01). LGE images were of similar quality when compared with free‐breathing acquisitions, but with reduced total scan time (85 ± 22 s to 35 ± 6 s; P < 0.001).ConclusionsSupplemental oxygenation and hyperventilation allow for prolonged breath‐holding and enable single breath‐hold 3D accelerated LGE with similar image quality as free breathing with NAV. Magn Reson Med 72:850–857, 2014. © 2013 Wiley Periodicals, Inc.
Urinary incontinence 4 and 12 years after first delivery: Risk factors associated with prevalence, incidence, remission, and persistence in a cohort of 236 women
Authors: Pizzoferrato Anne‐Cécile , Fauconnier Arnaud , Quiboeuf Emeline , Morel Karine , Schaal Jean‐Patrick , Fritel Xavier 
Published: October 2013

AbstractAimsOur aim was to study risk factors associated with prevalence, incidence, and remission of UI 4 and 12 years after first delivery.MethodsSeven hundred seventy‐four nulliparous women who gave birth in 1996 in two French maternity units at term received a questionnaire about their urinary symptoms in 2000 and again in 2008. Two hundred thirty‐six women returned a questionnaire about UI 4 and 12 years after first delivery. Four groups of women were built: (A) women continent 4 and 12 years after first delivery; (B) women continent at 4 and incontinent at 12 years; (C) women incontinent at 4 and continent at 12 years; and (D) women incontinent at 4 and 12 years. Multivariate logistic regressions were used to determine risk factors of UI prevalence (groups B + D vs. A + C), incidence (B vs. A), remission (C vs. D), and onset of UI (D vs. B).ResultsFactors associated with UI 12 years after first pregnancy were: BMI (OR = 1.17 [95%CI: 1.04–1.32], by 1 kg/m2) and increasing BMI (1.43 [1.19–1.73]), first child's weight (1.08 [1.001–1.16], by 100 g) and UI during first pregnancy (3.77 [1.83–7.76]). Factors associated with UI incidence were age at first delivery (0.86 [0.75–0.98]) and high BMI (1.24 [1.05–1.45]). Increasing BMI, UI during first pregnancy, and heavy first child reduce the likelihood of UI remission (0.37 [0.20–0.68], 0.11 [0.02–0.63], and 0.73[0.59–0.91], respectively).ConclusionsUI during first pregnancy could be indicative of individual susceptibility to UI. Obesity appears to be a modifiable factor for remission of UI in women. Neurourol. Urodynam. 33:1229–1234, 2014. © 2013 Wiley Periodicals, Inc.
Particle swarm control
Authors: Allain P. , Courty N. , Corpetti T. 
Published: October 2013

SUMMARYControlling several and possibly independent moving agents in order to reach global goals is a tedious task that has applications in many engineering fields such as robotics or computer animation. Together, the different agents form a whole called swarm, which may display interesting collective behaviors. When the agents are driven by their own dynamics, controlling this swarm is known as the particle swarm control problem. In that context, several strategies, based on the control of individuals using simple rules, exist. This paper defends a new and original method based on a centralized approach. More precisely, we propose a framework to control several particles with constraints either expressed on a per‐particle basis, or expressed as a function of their environment. We refer to these two categories as respectively Lagrangian or Eulerian constraints. The contributions of the paper are the following: (i) we show how to use optimal control recipes to express an optimization process over a large state space including the dynamic information of the particles; and (ii) the relation between the Lagrangian state space and Eulerian values is conveniently expressed with graph operators that make it possible to conduct all the mathematical operations required by the control process. We show the effectiveness of our approach on classical and more original particle swarm control problems. Copyright © 2013 John Wiley & Sons, Ltd.
Using poison center exposure calls to predict prescription opioid abuse and misuse‐related emergency department visits
Authors: Davis Jonathan M. , Severtson Stevan G. , Bucher‐Bartelson Becki , Dart Richard C. 
Published: October 2013

ABSTRACTBackgroundPrescription drug abuse is a critical problem in the USA and has been linked to more deaths than automobile accidents. Despite this growing epidemic, the USA lacks a timely early warning system. Poison centers (PCs) have the potential to act as sentinel reporting entities for prescription drug abuse and misuse due to near‐real‐time data reporting and abundant coverage in the USA.MethodsData from the Researched Abuse, Diversion and Addiction‐Related Surveillance (RADARS®) System PC program were compared with data from the Drug Abuse Warning Network (DAWN) from 2004 through 2010. Population rates of PC call mentions regarding abuse and misuse of prescription opioids were compared with population rates of emergency department visit mentions of the same using linear regression. Products included in the analysis were the following: buprenorphine, fentanyl, hydrocodone, hydromorphone, methadone, morphine, and oxycodone.ResultsThe strength of association between RADARS System PC data and DAWN emergency department visits regarding all opioids in aggregate was strong (R2 = 0.81, p < 0.001). The correlations between the two programs at the drug class level also were strong for buprenorphine, hydrocodone, hydromorphone, methadone, and oxycodone (all R2 > 0.70, all p < 0.01), significant for fentanyl (p = 0.05), and moderate for morphine (p = 0.09).ConclusionsData on prescription opioid drug abuse from the RADARS System PC program correlates well with emergency room data from DAWN. Due to timeliness of data, geographic coverage and strong associations with other warning systems, PC data can be used for sentinel reporting on prescription drug abuse and misuse in the USA. Copyright © 2013 John Wiley & Sons, Ltd.
Artificial neural network‐based photovoltaic module temperature estimation for tropical climate of Malaysia and its impact on photovoltaic system energy yield
Authors: Almaktar Mohamed , Abdul Rahman Hasimah , Hassan Mohammad Yusri , Saeh Ibrahim 
Published: October 2013

AbstractThis article presents an artificial neural network (ANN)‐based approach for predicting photovoltaic (PV) module temperature using meteorological variables. The proposed approach utilizes actual hourly records of various meteorological parameters, such as ambient temperature Ta, solar irradiation G, relative humidity RH, and wind speed Ws as input variables. The hourly meteorological data were collected over 9 months in the year 2009 from a 92‐kWp installed PV system in Selangor, Malaysia. The data were divided into two sets: training data, which are a set of 1849 (April–October) hourly data, and 578 (November–December) hourly records of working as test data. Four ANN models have been developed by using different combination of meteorological parameters as inputs, and, for each model, the output is the PV module temperature Tm. It was found that the model using all parameters, including RH and Ws as inputs, gave the most accurate results with correlation coefficient (r) 95.9%, and 0.41, 0.1, and 4.5% for MBE, RMSE, and MPE, respectively. To show the superiority and applicability of the developed ANN model, results from the proposed ANN model have been compared with the conventional model adopted by Malaysia Energy Center and another mathematical model based on regression. With the model's simplicity, the proposed approach can be used as an effective tool for predicting the PV module temperature, for any type of PV systems, in remote or rural locations with no direct measurement equipments. The developed model also will be very useful in studying PV system performance and estimating its energy output. Copyright © 2013 John Wiley & Sons, Ltd.
Amphiphilic diblock copolymer‐based multiagent photonic sensing scheme
Authors: Athanasekos Loukas , El Sachat Alexandros , Pispas Stergios , Riziotis Christos 
Published: October 2013

ABSTRACTEfficient functionalization of polymer optical fibers' (POF) surface by a novel block copolymer material toward the development of low‐cost multiagent sensors is presented. The employed poly(styrene sulfonate‐b‐tert‐butylstyrene) (SPS‐b‐PtBS) diblock copolymer possesses two blocks of distinctively different polarity and charge, the hydrophilic SPS which is sensitive to polar substances and the hydrophobic PtBS which is sensitive to organic solvents. The coexistence of two different blocks allows for the detection of a wide variety of agents, ranging from ammonia, and organic solvents, to biomolecules like lysozyme, at room temperature as opposed to alternative usually more complicated techniques, all with the sole use of one sensing medium. Copolymers' high glass transition temperature enables the formation of stable and environmentally robust overlayers. The sensing performance of the material is evaluated experimentally on the customizable platform of POFs, demonstrating fast response, high operational reversibility, and also reusability in successively different testing agents. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 46–54
Biomimetic chitosan‐treated clay–elastomer composites with water‐responsive mechanically dynamic properties
Authors: Wu Tongfei , O′Kelly Kevin , Chen Biqiong 
Published: October 2013

ABSTRACTBiomimetic hydrophobic polymer composites with water‐responsive mechanically adaptive behaviors were successfully prepared using hydrophilic chitosan‐treated clay (chi‐clay) as the water‐activated, pH‐sensitive and reinforcing phase and elastomeric thermoplastic polyurethane (TPU) as the matrix. Structural characterization, swelling tests in three representative solutions with different pH values, and dynamic mechanical analysis under wet and dry conditions were performed on the resultant chi‐clay‐TPU composites with varying chi‐clay contents. The results showed that the equilibrium swelling degree of TPU increased significantly with increasing chi‐clay content and that water transportation in all the composites followed Fickian diffusion mechanism. The presence of chi‐clay provided remarkable enhancement of the storage modulus of TPU and offered water‐responsive changes of the modulus. Such changes increased with chi‐clay content and were pH‐sensitive, with the acidic condition rendering the largest modulus difference. These water‐responsive polymer composites may find potential applications in biomedical fields and beyond. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 55–62
Posttraumatic growth and psychological distress in Chinese early‐stage breast cancer survivors: a longitudinal study
Authors: Liu Jun‐E , Wang Hui‐Ying , Wang Mu‐Lan , Su Ya‐Li , Wang Pi‐Lin 
Published: October 2013

AbstractObjectiveTo describe the dynamic changes in posttraumatic growth (PTG) and psychological distress in hospitalized early‐stage breast cancer (BC) survivors over a 6‐month period.MethodsA longitudinal study design was adopted. The PTG inventory (PTGI) and distress management screening measure were used 3 months after diagnosis, then again at 6 and 9 months after diagnosis. For baseline data, 155 BC patients who were receiving chemotherapy were selected from four first‐class tertiary hospitals in Beijing from April 2010 to March 2011 using a purposive sampling method. Of these, 120 BC patients completed the follow‐up investigation. A repeated measures analysis of variance, followed by least significant difference post‐hoc analysis, was used to compare PTG and psychological distress.ResultsThe total score of the PTGI was 62.72 ± 14.66 in BC survivors at 3 months after diagnosis. There was a weak negative relationship between PTG and psychological distress (r = –0.282, p < 0.001). PTG increased and psychological distress decreased from 3 to 9 months after diagnosis. The PTGI scores were 63.24 ± 14.21, 68.26 ± 15.29, and 70.29 ± 16.07 at 3, 6, and 9 months after diagnosis, respectively, with distress thermometer scores of 3.62 ± 1.98, 2.59 ± 2.00, and 2.51 ± 1.00, respectively.ConclusionsAt 3 months after diagnosis, BC survivors develop PTG at a low level while they are receiving chemotherapy. PTG showed a weak negative association with psychological distress. The level of PTG shows an increasing tendency, whereas the degree of psychological distress exhibits a downward trend in the 9 months after diagnosis. Copyright © 2013 John Wiley & Sons, Ltd.
Minimum cost upgrade of phasor measurement unit networks for synchrophasor availability
Authors: Huang Jianzhuang , Wu N. Eva 
Published: October 2013

SUMMARYThis paper considers the problem of placing additional phasor measurement units (PMUs) and communication links into a PMU network in a power system. The objective is for the synchrophasors (PMU outputs) across the power system to meet a prescribed availability profile with fewest new PMUs and links among them. Achieving a required synchrophasor availability profile is critical in supporting wide area monitoring, protection, and control in a power system. In our recently reported work, synchrophasor availability is solved from a controlled Markov chain where binary variables indicating placement decisions are embedded as stationary control variables. In this paper, the assumption that communication links are always available wherever needed is removed. Random interruptions in PMU communications are modeled in such a way that the reformulated placement problem remains Boolean‐convex, and the computational complexity with respect to the number of buses remains O(n2). The solution to placement of PMUs and communication links into the Institute of Electrical and Electronics Engineers (IEEE) 118‐bus test system is presented. Copyright © 2013 John Wiley & Sons, Ltd.
Design and implementation of a monitoring system applied to a long‐span prestressed concrete bridge
Authors: Sousa Helder , Félix Carlos , Bento João , Figueiras Joaquim 
Published: October 2013

AbstractCurrently, long‐term monitoring systems are mandatory for major civil engineering structures such as bridges, tunnels and dams. Generally, they monitor a set of physical, chemical and mechanical parameters in critical sections of the structure by incorporating appropriate sensors. The set of data collected demonstrates great potential in the prevention of damage and contributes to more efficient maintenance of the structures monitored. This work presents the long‐term monitoring system installed on the new Lezíria Bridge over the River Tagus in Portugal. The system was developed to control some aspects of the construction process and to survey the service life of the structure. A set of structural, durability and environmental parameters defining the bridge condition are remotely assessed in real‐time via a fibreoptic network. Aspects such as architecture, installation and functionality of the monitoring system are discussed and the innovative aspects of the implementation are highlighted. In this context, the main goal of this work is to present the long‐term monitoring system of Lezíria Bridge, sharing the experiences, the solutions and the procedures adopted, given their potential usefulness in the implementation of similar projects.
Three‐dimensional FE analysis of reinforced concrete structures using the lattice equivalent continuum method
Authors: Ahmad Syed Ishtiaq , Tanabe Tada‐aki 
Published: October 2013

AbstractThe lattice equivalent continuum model (LECM) has proved to be very effective in analysing reinforced concrete structures in two‐dimensional cases. That model is extended here to three dimensions and is fitted to a finite element formulation for analysing three‐dimensional reinforced concrete structures. In any of the three principal directions, the stress–strain behaviour of concrete will be affected by the stress state in the other two directions. Consequently, stress‐strain curves for concrete will shift from a uniaxial pattern. This phenomenon is considered in this work by selecting concrete peak stresses in three alternative approaches. The effectiveness of those approaches is also evaluated. The results of the calculations show good reproduction of the test data, which indicates the validity of this proposed 3D modelling of reinforced concrete.
A deformation criterion for fatigue of concrete in tension
Authors: Thun Håkan , Ohlsson Ulf , Elfgren Lennart 
Published: October 2013

AbstractA deformation criterion is proposed for the fatigue failure of concrete in tension. According to the criterion, a fatigue failure is imminent when the total deformation approaches the deformation at maximum stress in a corresponding static test. This criterion was originally proposed for bond slip by Balázs in 1991. It is tested on two series of new and old concrete cylinders loaded in cyclic tension. How the criterion may be used to predict the number of load cycles to failure for existing structures under cyclic tensile loading is also shown.