bluuebunny/crossref_metadata_2025_split huggingface dataset:
Barium titanate/polydimethylsiloxane nano/microcomposites fabrication, morphology, dielectric response and functionality
Authors: Patsidis Anastasios C. 
Published: February 2020

Polymer matrix composites with embedded ferroelectric and/or piezoelectric particles, constitute a novel and interesting class of engineering materials. The incorporation of ferroelectric and/or piezoelectric particles within a polymer matrix is expected to add functionality to the resulting composite, due to the variation of polarisation of the ceramic particles with temperature. In this work, an elastomeric matrix such as polydimethylsiloxane and BaTiO3 nano and microparticles were used for the fabrication of composites at various concentrations and sizes of the reinforcing phase. Morphological and structural characteristics were investigated via scanning electron microscopy images and X‐ray diffraction patterns. The dielectric behaviour of all fabricated specimens was investigated via broadband dielectric spectroscopy, in a wide frequency (10−1 Hz–10 MHz) and temperature (30–200°C) range. In the dielectric spectra, two relaxation processes were detected, namely cold crystallisation and interfacial polarisation. Values of dielectric permittivity enhance with filler content, and particles’ size, while diminishes significantly with frequency. Finally, the ability of the prepared systems to store energy was examined by calculating their energy density. The higher energy‐storing efficiency is exhibited by the micro‐BaTiO3 reinforced composites, while functional behaviour is induced via the thermally activated structural changes of ferroelectric particles.
Endoscopic submucosal dissection with double clip and rubber band traction for residual or locally recurrent colonic lesions after previous endoscopic mucosal resection
Authors: Faller Julien , Jacques Jérémie , Oung Borathchakra , Legros Romain , Rivory Jérôme , Subtil Fabien , Saurin Jean-Christophe , Robinson Philip , Ponchon Thierry , Pioche Mathieu 
Published: February 2020

Abstract
Background Endoscopic submucosal dissection (ESD) of residual or locally recurrent (RLR) colonic lesions after previous endoscopic mucosal resection (EMR) is an attractive but challenging technique. The present study aimed to evaluate the effectiveness and safety of ESD with double clip and rubber band traction (DCT-ESD) of RLR colonic lesions.
Methods We retrospectively analyzed all consecutive DCT-ESD procedures for RLR colonic lesions (rectum excluded) performed in two French centers. The frequency of en bloc and R0 resections, procedure speed, additional surgery, and complications were evaluated. R0 resection was also used to investigate the learning curve.
Results Among the 53 resections, 49 (92.5 %) were performed en bloc and 42 (79.2 %) achieved R0. The median procedure speed was 21 mm2/min. There were four (7.5 %) intraoperative perforations and one delayed bleeding; these were successfully treated endoscopically. There was no salvage surgery for complications. The R0 rate increased from 16/26 (61.5 %) for the first 26 procedures to 26/27 (96.3 %, P = 0.002) for the last 27 procedures.
Conclusions DCT-ESD appears to be a safe and effective treatment for RLR colonic lesions after EMR.
Analysis of Correlation and Agreement between the Uroflowmetry and the International Prostate Symptom Score in Patients after retropubic Radical Prostatectomy: A Multicenter Prospective Study
Authors: Torres Lynda , Puerto Angie , Bravo Alejandra , Acuña Miguel , Sánchez Juan , Bejarano Olga , Peña Paula , Cataño Juan Guillermo 
Published: February 2020

Abstract
Objectives Patients undergoing retropubic radical prostatectomy (RRP) may suffer from lower urinary tract symptoms (LUTS). We aim to characterize LUTS and to evaluate the correlation and agreement between uroflowmetry and the International Prostate Symptom Score (IPSS) in patients after RRP in two reference centers.
Methods An observational multicenter prospective study was conducted between December 2015 and September 2016. Patients with at least 12-months of follow-up after RRP were included; these were evaluated with uroflowmetry and the IPSS.
Results A total of 90 patients were included. The mean follow-up was of 54.6 months (standard deviation [SD] = 27.52), and the mean age was 65 (SD = 6.85) years old. The mean IPSS was 7.41 (SD = 6.29), with 33.3% (n = 54) of the patients with moderate symptoms and 6.7% (n = 6) with severe symptoms. A total of 50% (n = 45) of the patients had normal uroflowmetry. Patients with an abnormal/equivocal result in the uroflowmetry had a mean of 9.31 (SD = 7.03) points in the IPSS versus 5.51 (SD = 4.82) in patients with a normal uroflowmetry result (p < 0.01). The level of agreement between mild versus moderate-to-severe LUTS and normal uroflowmetry versus abnormal/equivocal was 61.1% (k = 0.22, p = 0.04). We found that a score ≥ 10 in the IPSS had a level of agreement of 65.6% (k = 0.31, p = 0.0004).
Conclusions We consider that although the IPSS cannot replace uroflowmetry and vice versa, these tests are complementary and may be useful tools in the evaluation of patients with LUTS after RRP.
Transitional Cell Carcinoma of the Bladder in Pediatric Patients: Where Do We Stand?
Authors: Perez Jaime , Chavarriaga Julián , Peña Paula , Ramos Gustavo , Torres Lynda , Bravo Alejandra , Orrego Paola , Fernandez Nicolás 
Published: February 2020

Abstract
Introduction Transitional cell carcinoma of the bladder (TCCB) is uncommon in the pediatric population, and its etiology, natural history and epigenetics remain poorly understood. We aim to describe six cases of TCCB in pediatric patients and discuss the state of the art in the management and follow-up of the patients with this uncommon early presentation.
Methods The clinicopathological data of 6 patients with TCCB who underwent transurethral resection of bladder tumor (TURBT) were obtained from our institutional database. The patient data were collected retrospectively. A review of the literature was performed, and the most relevant and trending data were analyzed.
Results A total of 6 patients (4 female, 2 male) were treated at our institution between 2004 and 2019. The mean age of the sample was 12 years, and the presenting symptoms were macroscopic hematuria (3 cases), suprapubic pain (2 cases), and 1 case was an incidental finding during pelvic ultrasonography. The long-term follow-up (median follow-up of 61 months) did not reveal recurrence.
Conclusion Transitional cell carcinoma of the bladder rarely presents in the pediatric population. Genetic and epigenetic anomalies have been proposed as causes, as well as carcinogenic exposure. The reported cases tend to have a good prognosis, and most are non-invasive at the diagnosis. Follow-up protocols are still lacking, as well as molecular insights on tumor development and prognostic markers.
Tracheoesophageal Voice Prosthesis Use and Maintenance in Laryngectomees
Authors: Brook Itzhak , Goodman Joseph F 
Published: February 2020

AbstractTracheoesophageal speech is the most common voicing method used by laryngectomees. This method requires the installation of tracheoesophageal prosthesis (TEP), which requires continuous maintenance to achieve optimal speaking abilities and prevent fluid leakage from the esophagus to the trachea. The present manuscript describes the available types of TEPs, the procedures used to maintain them, the causes for their failure due to fluid leakage, and the methods used for their prevention. Knowledge and understanding of these issues can assist the otolaryngologist in caring for laryngectomees who use tracheoesophageal speech.
The Role of Allopregnanolone Levels in Traumatic Brain Injury in Children and Adults and the Correlation of Its Levels with Computerized Tomography Images of the Brain
Authors: Coskun Göker , Beceren Nesrin Gökben , Bedel Cihan 
Published: February 2020

Abstract
Aim Allopregnanolone (AP) is a steroid of progesterone origin and it can readily pass through the blood–brain barrier. The aim of this study was to determine the AP levels occurring after head trauma in children and adults and to compare these results to the findings observed in the computed tomography (CT) of the respective individuals.
Materials and Methods  This study was conducted in the period from April 2018 to December 2018 on 92 patients admitted with isolated head trauma and on 80 healthy individuals in similar gender and age groups. The age, gender, and Glasgow Coma Scores of the patients; the cause of the head trauma; and the findings from CT imaging were recorded.
Results The levels of AP were significantly lower in the head trauma patients both in the adult and pediatric groups compared with the healthy control groups of respective ages (p < 0.001). Furthermore, the levels of AP were significantly lower in both the pediatric and adult patients with identified pathologies in the CT images compared with their counterpart control groups (p < 0.001). In predicting an existing pathology in the CT, an AP level of > 138.5 was found to be 85.7% sensitive and 85.3% specific in the pediatric patients, and an AP level of >118.3 was 75% sensitive and 83.5% specific in the adult patients.
Conclusion The levels of AP in head trauma patients were reduced in both the pediatric and adult patients and these low levels increase the likelihood of detecting pathology in CT images.
Fusarium
wilt: a threat to banana cultivation and its management.
Authors: Thangavelu R. , Loganathan M. , Arthee R. , Prabakaran M. , Uma S. 
Published: February 2020

Abstract

Banana is affected by a wide number of diseases, of which,
Fusarium
wilt caused by
Fusarium oxysporum
f. sp.
cubense
(
Foc
) race 1 has played a major role in devastating Gros Michel banana plantations. Since 1960s, the pathogen
Foc
race 4 has threatened the survival and existence of the Cavendish group of bananas, which has necessitated detailed study on
Fusarium
wilt, the causal organism
Foc
, its biology, dispersal, pathogenicity, diversity and detection at a molecular level (especially in soils) and its management. The recently developed technique of transferring the gene encoding green fluorescent protein into
Foc
has assisted in visualizing and analysing the colonization and infection of banana plants by the pathogen. Studies on the pathogenicity secreted in xylem genes have helped in rapid detection of the pathogen
in planta
and techniques such as real-time fluorescence loop-mediated isothermal amplification assay have facilitated rapid and direct quantitative detection of
Foc
in soil. Several management practices, especially resistant varieties/transgenics and biological control methods are available for the effective management of this deadly disease. Strict quarantine procedures and reduction of
Foc
inoculum are the methods undertaken to limit the spread of the disease to other un-infected regions. This review summarizes the recent developments of
Fusarium
wilt in banana and its management.
Structural, optical and magnetic properties of Y3−0.02−xEr0.02Yb
x
Al5O12 (0 < x < 0.20) nanocrystals: effect of Yb content
Authors: Kamińska Izabela , Jankowski Dawid , Sikora Bożena , Kowalik Przemysław , Minikayev Roman , Wojciechowski Tomasz , Chojnacki Michał , Sobczak Kamil , Rybusiński Jarosław , Szczytko Jacek , Zajdel Karolina , Suchocki Andrzej , Paszkowicz Wojciech , Frontczak-Baniewicz Małgorzata , Fronc Krzysztof 
Published: February 2020

Abstract
The paramagnetic Y3−0.02−x
Er0.02Yb
x
Al5O12 (x = 0.02, 0.06, 0.10, 0.12, 0.18, 0.20) nanocrystals (NCs) were synthesized by the microwave-induced solution combustion method. The XRD, TEM and SEM techniques were applied to determine the NCs’ structures and sizes. The XRD patterns confirmed that the NCs have for the most part a regular structure of the Y3Al5O12 (YAG) phase. The changes of the distance between donor Yb3+ (sensitizer) and acceptor Er3+ (activator) were realized by changing the donor’s concentration with a constant amount of acceptor. Under 980 nm excitation, at room temperature, the NCs exhibited strong red emission near 660 and 675 nm, and green upconversion emission at 550 nm, corresponding to the intra 4f transitions of Er3+ (4F9/2,
2H11/2, 4S3/2) → Er3+ (4I15/2). The strongest emission was observed in a sample containing 18% Yb3+ ions. The red and green emission intensities are respectively about 5 and 12 times higher as compared to NCs doped with 2% of Yb3+. In order to prove that the main factor responsible for the increase of the upconversion luminescence efficiency is reduction of the distance between Yb3+ and Er3+, we examined, for the first time the influence of hydrostatic pressure on luminescence and luminescence decay time of the radiative transitions inside donor ion. The decrease of both luminescence intensity and luminescence decay times, with increasing hydrostatic pressure was observed. After applying hydrostatic pressure to samples with e.g. 2% and 6% Yb3+, the distance between the donor and acceptor decreases. However, for higher concentrations of the donor, this distance is smaller, and this leads to the effective energy transfer to Er3+ ions. With increasing pressure, the maximum intensity of near infrared emission is observed at 1029, 1038 and 1047 nm, what corresponds to 2F5/2 → 2F7/2 transition of Yb3+.
Electroactive actuator based on polyurethane nanofibers coated with polypyrrole through electrochemical polymerization: a competent method for developing artificial muscles
Authors: Ebadi Seyed Vahid , Fashandi Hossein , Semnani Dariush , Rezaei Behzad , Fakhrali Aref 
Published: February 2020

Abstract
In the present study, the electrochemical polymerization was carried out to coat the surface of electrospun polyurethane (PU) nanofibers with conductive electroactive polypyrrole (PPy) towards production of Faradaic bending actuators. For this purpose, the surface of electrospun nanofibers was first coated with a thin layer of gold using physical vapor deposition (PVD). PPy was then coated on the surface of prepared nanofibers using different consumed electric charges ranging from 0.5 to 5 C. The produced samples were characterized with respect to surface morphology, electrical properties, electrochemical properties and finally bending actuation performance of the produced actuators. The synthesis of PPy on the surface of nanofibers by the electrochemical polymerization process as well as preservation of the fibrous and porous structure of the samples was confirmed by SEM images. In the polymerization process, the amount of PPy coating on the surface of PU nanofibers increased dramatically with increasing the consumed electric charge. The results of the electrical properties of the produced nanofibrous layers showed that the surface resistivity of the produced PU/PPy nanofibrous layer was decreased from 719.5 to 51.3 Ω/sq for samples produced with the consumed charges of 0.5 and 5.0 C, respectively. Moreover, the electroactive properties of produced actuators were evaluated by cyclic voltammetry technique in a 0.1 M aqueous electrolyte solution of LiClO4 between potentials of −0.6 to 0.8 V. The results revealed that the electroactive properties of produced actuators were improved with increasing the amount of PPy coating. The evaluation of the bending actuation performance of the actuators showed that the angular displacement of the samples produced with consumed charges of 2, 3, 4 and 5 C in a potential cycle was 48°, 153°, 190° and 225°, respectively. These actuators have the potential to be applied in the fields of medicine, robotics and smart textiles.
Sample caching Markov chain Monte Carlo approach to boson sampling simulation
Authors: Liu Yong , Xiong Min , Wu Chunqing , Wang Dongyang , Liu Yingwen , Ding Jiangfang , Huang Anqi , Fu Xiang , Qiang Xiaogang , Xu Ping , Deng Mingtang , Yang Xuejun , Wu Junjie 
Published: February 2020

Abstract
Boson sampling is a promising candidate for quantum supremacy. It requires to sample from a complicated distribution, and is trusted to be intractable on classical computers. Among the various classical sampling methods, the Markov chain Monte Carlo method is an important approach to the simulation and validation of boson sampling. This method however suffers from the severe sample loss issue caused by the autocorrelation of the sample sequence. Addressing this, we propose the sample caching Markov chain Monte Carlo method that eliminates the correlations among the samples, and prevents the sample loss at the meantime, allowing more efficient simulation of boson sampling. Moreover, our method can be used as a general sampling framework that can benefit a wide range of sampling tasks, and is particularly suitable for applications where a large number of samples are taken.
Coriolis compensation via gravity in a matter-wave interferometer
Authors: Fein Yaakov Y , Kiałka Filip , Geyer Philipp , Gerlich Stefan , Arndt Markus 
Published: February 2020

Abstract
Matter-wave interferometry offers insights into fundamental physics and provides a precise tool for sensing. Improving the sensitivity of such experiments requires increasing the time particles spend in the interferometer, which can lead to dephasing in the presence of velocity-dependent phase shifts such as those produced by the Earth’s rotation. Here we present a technique to passively compensate for the Coriolis effect using gravity, without the need for any moving components. We demonstrate the technique with fullerenes in a long-baseline molecule interferometer by measuring the gravitational and Coriolis phase shifts and obtaining the maximum visibility one would expect in the absence of the Coriolis effect.
Progress in the conceptual design of the CFETR toroidal field coil with rectangular conductors
Authors: Liu Xiaogang , Wu Fan , Wang Zhaoliang , Li Guoqiang , Liu Xiaoju , Li Hang , Li Junjun , Ren Yong , Wu Yu , Gao Xiang 
Published: February 2020

Abstract
A comprehensive research facility project was approved in December 2018 with funding of 345 million EUR, to support the research and development of the China Fusion Engineering Test Reactor (CFETR). As part of this project, a full-size CFETR toroidal field (TF) coil will be designed, manufactured and tested by the Institute of Plasma Physics Chinese Academy of Sciences. Two options are being explored in parallel for the TF coil design, using either circle-in-square or rectangular cable-in-conduit conductors (CICCs). The rectangular CICC has been reported to have some merits for a DEMO TF coil, as reported in designs of the EU-DEMO and K-DEMO. First this paper presents the progress in the conceptual design of the CFETR TF coil with rectangular CICCs, according to the most recent reference single-null configuration and radial build of CFETR. Then, electromagnetic analyses are performed to give the magnetic field distributions, toroidal field ripple, in-plane and out-of-plane Lorentz loads. Finally, 3D global and 2D local mechanical analyses are conducted, and the detailed mechanical behavior of the TF coil is illustrated and discussed. Our analyses indicate that the present TF design is reasonable, considering the ITER criteria, and provides valuable insight into the mechanical behavior of the CFETR TF coil system.
Resilience of cultural landscape heritage study in spatial tourism context
Authors: Utami Wahyu 
Published: February 2020

Abstract
Resilience is regarded as a capacity to adapt to the dynamic condition as a management to avoid disturbance and disaster. All this time, resilience is always embedded in local people’s values. Actually in the tourism case, there is a resilience approach to avoid the disaster because of tourism activities or over tourism case. Tourist visits have created problems when local people or spatial spaces are unable to accommodate tourist needs. Based on this phenomenon today, it is important to focus on resilience thinking on tourist area, especially in this case cultural landscape heritage area. Resilience must be understood as the main aspect to explore the potential and the capability to adapt to the dynamic condition that is always changing. In architecture and planning approach, spatial is a human space that can show an interaction between human and nature with culture as media and all of them must be regarded as a holistic system with equilibrium and balance. In this study, the definition of resilience was explored by content analysis based on exploration of many texts in journals and books. It was then discussed by dialog theory between tourist, cultural landscape and resilience. Understanding resilience of cultural landscape with content analysis will create several conclusions that can become reference to tourism cases. To support the theory, this paper described one case of a tourist area chosen as national tourism destination that is Toba Lake area in North Sumatera.
A study on urban spatial patterns of riverside settlement: a case study of Musi Riverside, Palembang
Authors: Lussetyowai Tutur , Adiyanto Johannes 
Published: February 2020

AbstractThe riverside settlements in Palembang are located in wetlands in the form of tidal swamps. This natural condition affects the formation of the urban spatial patterns because all local people activities are carried out on swamp land. Studies on the urban spatial patterns of riverside settlements are intended to obtain the consideration in wetland urban spatial planning, especially in Zoning Regulations, as a tool in building permision. The research method was a case study method consisting of field research and questionnaires distributed to the local community. The location took place in three riverside settlements. The analysis used descriptive analysis for field survey result and likert scale measurements for questionnaire result. The analysis showed that the riverside settlements had unique characteristics because most of the people activities took place above the water. The boundaries of neighborhood units were formed by rivers and roads. The patterns of villages and buildings had two orientations: the road and to the river. The urban spatial patterns in riverside settlement consisted of three patterns: linear patterns, grid patterns, cluster patterns and combinations, due to the natural conditions and the limitations of the material used to form the structure of the road. Buildings and roads in the area were made above the water (on stilts structure), and the height of the stilts considered the water level at the highest tide. The results of this study could be used as consideration in determining the design criteria of urban spatial planning in the riverside settlement.
Potential development of transit areas that are in synergy with environment (case study: tanjung barat TOD, Jakarta)
Authors: Rilatupa James 
Published: February 2020

Abstract
TOD is an urban development approach that integrates mixed spatial planning including housing, shops, markets, sports facilities, offices, open spaces and public facilities with mass transportation, such as buses, trains and equipped with pedestrian or bicycle lanes. The congestion problem that occurs in Jakarta can be reduced by TOD on the supporting area that has a significant impact on environmental pollution, high social costs, and energy waste. The problem arises because there is no balance between transportation needs and the provision of facilities and infrastructure, thus it ultimately impacts changes in land use. This research focuses on the area around the Tanjung Barat station, where apartments are being built with the TOD concept. The research method employed a qualitative descriptive approach. The data used were primary and secondary data. The results of research indicate that the construction of Tanjung Barat TOD is a dilemma for DKI Jakarta Government, because it has the potential to violate spatial rules. In addition, a congestion level that occurs can increase, although the government expects that with Tanjung Barat TOD, congestion levels can be reduced because passengers who live in TOD apartments switch to public transportation modes.