bluuebunny/crossref_metadata_2025_split huggingface dataset:
Management of recurrent ureteral stricture: a retrospectively comparative study with robot-assisted laparoscopic surgery versus open approach
Authors: Wang Qing , Lu Yuchao , Hu Henglong , Zhang Jiaqiao , Qin Baolong , Zhu Jianning , Dirie Najib Isse , Zhang Zongbiao , Wang Shaogang 
Published: December 2019

Background
Management of recurrent ureteral stricture is challenging. Consensus on the best surgical choice has not been demonstrated. In this study, we aim to report our experience in treating recurrent ureteral stricture and demonstrate whether robot-assisted procedure for redo ureteral surgery is as effective as open procedure while remaining less invasive.

Methods
We retrospectively assessed 41 patients (22 robot-assisted surgeries and 19 open surgeries) who underwent consecutive robot-assisted and open procedures for redo ureteral surgery from January 2014 to 2018 in our institution. Perioperative outcomes, including demographics, operative time, estimated blood loss, complications, pain scores, success rate and cost, were compared between two groups.

Results
There was no significant intergroup difference in terms of age, body mass index, gender composition and American Society of Anesthesiologists scores. A total of 31 patients underwent redo pyeloplasty and ten underwent redo uretero-ureterostomy. Compared with open group, robot-assisted group showed shorter operative time (124.55 min vs. 185.11 min, p < 0.0001), less estimated blood loss (100.00 mL vs. 182.60 mL, p = 0.008) and higher cost (61161.77¥ vs. 39470.79¥, p < 0.0001). Complication rate and pain scores were similar between two groups. Median follow-up periods were 30 and 48 months for robot-assisted and open group respectively. Success rate in the robot-assisted (85.71%) and the open group (82.35%) was not significantly different.

Conclusions
Robot-assisted surgery for recurrent stricture after previous ureteral reconstruction is as effective as open procedure and is associated with shorter operative time and less estimated blood loss.
Influence of Excessive Mobile Phone Use on Anxiety and Academic Performance among Medical College Students
Authors: Ali Akhtar , Mehmood Sehrish , Farooq Lubna , Arif Humaira , Korai Nadeem Akhtar , Khan Muhammad Aitmaud Uddolah 
Published: December 2019

Objectives: The objectives of this study were focused on finding the influence of excessive mobile phone usage on academic performance of medical students and to find association between excessive mobile phone usage and anxiety in students of a medical University Karachi.
Methods: It was a questionnaire based study, three different standardized questionnaires were used to assess the sleep pattern and anxiety, however academic performance were evaluated by their last attempted exam.
Results: Excessive mobile phone usage was significantly (p-value = 0.001) associated with disturbed sleep pattern and sleep quality. But we did not had significant results for anxiety and academic performance.
Conclusion: Excessive mobile phone use may disturb sleep pattern and quality of sleep but it does not affect academic performance and does not lead to anxiety.
A daily end‐to‐end quality assurance workflow for MR‐guided online adaptive radiation therapy on MR‐Linac
Authors: Chen Xinfeng , Ahunbay Ergun , Paulson Eric S. , Chen Guangpei , Li X. Allen 
Published: December 2019

AbstractPurposeMagnetic Resonance (MR)‐guided online adaptive radiation therapy (MRgOART), enabled with MR‐Linac, has potential to revolutionize radiation therapy. MRgOART is a complex process. This work is to introduce a comprehensive end‐to‐end quality assurance (QA) workflow in routine clinic for MRgOART with a high‐magnetic‐field MR‐Linac.Materials and MethodThe major components in MRgOART with a high‐magnetic field MR‐Linac (Unity, Elekta) include: (1) a patient record and verification (R&V) system (e.g., Mosaiq, Elekta), (2) a treatment session manager, (3) an offline treatment planning system (TPS), (4) an online adaptive TPS, (5) a 1.5T MRI scanner, (6) an 7MV Linac, (7) an MV imaging controller (MVIC), and (8) ArtQA: software for plan data consistency checking and secondary dose calculation. Our end‐to‐end QA workflow was designed to test the performance and connectivity of all these components by transferring, adapting and delivering a specifically designed five‐beam plan on a phantom. Beams 1–4 were designed to check Multi‐Leaves Collimator (MLC) position shift based on rigid image registration in TPS, while beam 5 was used to check daily radiation output based on image pixel factor of MV image of the field. The workflow is initiated in the R&V system and followed by acquiring and registering daily MRI of the phantom, checking isocenter shift, performing online adaptive replanning, checking plan integrity and secondary 3D dose calculation, delivering the plan while acquiring MV imaging using MVIC, acquiring real‐time images of the phantom, and checking the delivering parameters with ArtQA.ResultsIt takes 10 min to finish the entire end‐to‐end QA workflow. The workflow has detected communication problems, permitted resolution prior to setting up patients for MRgOART. Up to 0.9 mm discrepancies in isocenter shift based on the image registration were detected. ArtQA performed the secondary 3D dose calculation, verified the plan integrity as well as the MR‐MV isocenter alignment values in TPS. The MLC shapes of beam 1–4 in all adaptive plans were conformal to the target and agreed with MV images. The variation of daily output was within ±2.0%.ConclusionsThe comprehensive end‐to‐end QA workflow can efficiently check the performance and communication between different components in MRgOART and has been successfully implemented for daily clinical practice.
Self‐Propelled Tags for Protein Detection
Authors: Mayorga‐Martinez Carmen C. , Pumera Martin 
Published: December 2019

AbstractProtein detection is of tremendous significance for biological and biomedical sciences. Because there is no equivalent of polymerase chain reaction available as a tool for protein detection, researchers must rely on tags to enhance the limits of detection. One of the crucial steps is the actual labeling of proteins, which relies on diffusion of the label, which is very slow, or external mixing of the label and protein is needed. Here, a conceptually new approach is demonstrated: self‐propelled tags that autonomously move in the solution and enhance protein detection. The tags used here are based on IrO2/Pt bilayer microtubules, which can self‐propel and act as moving tags for enhanced protein electrochemical detection. This completely new label‐based protein detection concept using self‐propelled tag will find a wide spectrum of applications.
Antibiotic‐Free Antibacterial Strategies Enabled by Nanomaterials: Progress and Perspectives
Authors: Wang Yue , Yang Yannan , Shi Yiru , Song Hao , Yu Chengzhong 
Published: December 2019

AbstractBacterial infection is one of the top ten leading causes of death globally and the worst killer in low‐income countries. The overuse of antibiotics leads to ever‐increasing antibiotic resistance, posing a severe threat to human health. Recent advances in nanotechnology provide new opportunities to address the challenges in bacterial infection by killing germs without using antibiotics. Antibiotic‐free antibacterial strategies enabled by advanced nanomaterials are presented. Nanomaterials are classified on the basis of their mode of action: nanomaterials with intrinsic or light‐mediated bactericidal properties and others that serve as vehicles for the delivery of natural antibacterial compounds. Specific attention is given to antibacterial mechanisms and the structure–performance relationship. Practical antibacterial applications employing these antibiotic‐free strategies are also introduced. Current challenges in this field and future perspectives are presented to stimulate new technologies and their translation to fight against bacterial infection.
Red‐Carbon‐Quantum‐Dot‐Doped SnO2 Composite with Enhanced Electron Mobility for Efficient and Stable Perovskite Solar Cells
Authors: Hui Wei , Yang Yingguo , Xu Quan , Gu Hao , Feng Shanglei , Su Zhenhuang , Zhang Miaoran , Wang Jiaou , Li Xiaodong , Fang Junfeng , Xia Fei , Xia Yingdong , Chen Yonghua , Gao Xingyu , Huang Wei 
Published: December 2019

AbstractAn efficient electron transport layer (ETL) plays a key role in promoting carrier separation and electron extraction in planar perovskite solar cells (PSCs). An effective composite ETL is fabricated using carboxylic‐acid‐ and hydroxyl‐rich red‐carbon quantum dots (RCQs) to dope low‐temperature solution‐processed SnO2, which dramatically increases its electron mobility by ≈20 times from 9.32 × 10−4 to 1.73 × 10−2 cm2 V−1 s−1. The mobility achieved is one of the highest reported electron mobilities for modified SnO2. Fabricated planar PSCs based on this novel SnO2 ETL demonstrate an outstanding improvement in efficiency from 19.15% for PSCs without RCQs up to 22.77% and have enhanced long‐term stability against humidity, preserving over 95% of the initial efficiency after 1000 h under 40–60% humidity at 25 °C. These significant achievements are solely attributed to the excellent electron mobility of the novel ETL, which is also proven to help the passivation of traps/defects at the ETL/perovskite interface and to promote the formation of highly crystallized perovskite, with an enhanced phase purity and uniformity over a large area. These results demonstrate that inexpensive RCQs are simple but excellent additives for producing efficient ETLs in stable high‐performance PSCs as well as other perovskite‐based optoelectronics.
Exhaling‐Driven Hydroelectric Nanogenerators for Stand‐Alone Nonmechanical Breath Analyzing
Authors: Shen Daozhi , Xiao Yu , Zou Guisheng , Liu Lei , Wu Aiping , Xiao Ming , Feng Jiayun , Hui Zhuang , Duley Walter W. , Zhou Y. Norman 
Published: December 2019

AbstractThe analysis of exhaled breath is an increasingly important role in the provision of security and in the management of personal healthcare. The development of self‐powered, reliable, miniature low cost and noninvasive devices is fundamental to practical applications. However, most state‐of‐the‐art self‐powered systems are incorporating mechanical nanogenerators, which would promote contact failures of electronics and limit minimization of the monitoring system. This work outlines a new solution to this problem based on a self‐powered breath analyzer integrated with a hydroelectric nanogenerator (HENG), in which the nanogenerator extracts electrical power from biochemical energy. The output signal from the sensor in this device is highly sensitive to the concentration of ethanol exhaled in breath down to low detection limitation of 50 ppm. A high dynamic range is observed whereby a signal response of ≈80% relative to peak value is obtained under the exposure to gas containing 100 ppm of ethanol. Unlike conventional self‐powered breathing analyzers based on piezoelectric or triboelectric nanogenerators, mechanical vibrations are eliminated. The availability of this compact breath analyzer provides a new detection regime for gas sensing, and should facilitate the design of a wide range of self‐powered systems incorporated in the next generation of innovative electronic devices.
3D Printing Customized Optical Lens in Minutes
Authors: Shao Guangbin , Hai Rihan , Sun Cheng 
Published: December 2019

AbstractSynergizing grayscale photopolymerization and meniscus coating processes, rapid 3D printing of optical lenses is reported previously using projection microstereolithography (PµSL) process. Despite its 14 000‐fold‐improved printing speed over the femtosecond 3D printing process, PµSL still consumes significant amount of the fabrication time for precise recoating 5 µm thick fresh resin layers. At the reported speed of 24.54 mm3 h−1, 3D printing of the millimeter‐size lenses still takes hours. To further improve the printing speed, the microcontinuous liquid interface production process is implemented to eliminate the time‐consuming resin recoating step. However, the micrometer‐size pores in the Teflon membrane needed for oxygen transportation are found to completely spoil the surface smoothness. The use of polydimethylsiloxane thin film possessing much refined nanoscopic porosities as the functional substitute of Teflon membrane is reported to significantly reduce the surface roughness to 13.7 nm. 3D printing of 3 mm high aspherical lens in ≈2 min at a 200‐fold‐improved speed at 4.85 × 103 mm3 h−1 is demonstrated. The 3D printed aspherical lens has the demonstrated imaging resolution of 3.10 µm. This work represents a significant step in tackling the speed‐accuracy trade‐off of 3D printing process and thus enables rapid fabrication of customized optical components.
Glass‐Ceramic‐Like Vanadate Cathodes for High‐Rate Lithium‐Ion Batteries
Authors: Li Yutong , Wang Shitong , Dong Yanhao , Yang Yong , Zhang Zhongtai , Tang Zilong 
Published: December 2019

AbstractNanostructured electrode materials are good candidates in batteries especially for high‐rate applications, yet they often suffer from extensive side reactions due to anomalously large surface areas. While micrometer‐size materials provide better stability, the lattice diffusivity is often too slow for lithium ion intercalation over the same length scale in a short time. Herein, a simple method to synthesize glass‐ceramic‐like vanadate cathodes for lithium‐ion batteries with abundant internal boundaries that allow fast lithium ion diffusion while maintaining a small surface area that thus minimize the contact and side reactions with organic electrolyte, is reported. Such samples heat‐treated under optimized conditions can deliver an impressive high‐rate capacity of 103 mAh g−1 at 4000 mA g−1 over 500 cycles, which has better kinetics and cycling stability than similar vanadate‐based materials. A striking grain‐size refinement effect accompanied by a low‐temperature growth‐controlled phase transition, can be achieved by fine tuning the heat‐treatment process. It is believed that the findings are general for other transition metal oxides for energy applications.
Effects of the special structure of bio‐based shell powder on the properties of shell‐polycaprolactone composite
Authors: Weng Fangqing , Zhang Peirui , Koranteng Ernest , Ma Nian , Wu Zhengshun , Wu Qiangxian 
Published: December 2019

ABSTRACTThe natural clam shell (CS) has a unique CaCO3‐proteoglycan structure which can be beneficial in improving the strength of materials as a result of the stiff CaCO3content present in it. Moreover, the existence of active groups such as hydroxyl groups, carboxyl groups, and amino groups in CS can make it possible to form chemical bonds with some functional groups in other materials. In this work, CS which is mostly regarded as waste was utilized to prepare compatible composites via melting process with biodegradable polycaprolactone (PCL). Addition of 15 wt % of polyurethane prepolymer as a compatibilizer to a designed weight ratio of 1 to 1 of CS powder and PCL increased the elongation at break of the composite from 9.3 to 536.5%, and also improved the tensile strength from 14.9 to 18.9 MPa. Particularly important was that scanning electron microscopy investigation revealed that the adhesion between the CS and PCL improved significantly as the content of the compatibilizer was increased. This work shows that CS has great potential applications in the area of compatible composites and could serve as an alternative material for reinforcement in polymer composites. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2020,137, 48768.
The Anatomy of Asilisaurus kongwe, a Dinosauriform from the Lifua Member of the Manda Beds (~Middle Triassic) of Africa
Authors: Nesbitt Sterling J. , Langer Max C. , Ezcurra Martin D. 
Published: December 2019

ABSTRACTThe diagnosis of Dinosauria and interrelationships of the earliest dinosaurs relies on careful documentation of the anatomy of their closest relatives. These close relatives, or dinosaur “precursors,” are typically only documented by a handful of fossils from across Pangea and nearly all specimens are typically missing important regions (e.g., forelimbs, pelves, skulls) that appear to be important to help resolving the relationships of dinosaurs. Here, we fully describe the known skeletal elements of Asilisaurus kongwe, a dinosauriform from the Middle Triassic Manda Beds of the Ruhuhu Basin of Tanzania. The taxon is known from many disarticulated and partially articulated remains and, most importantly, from a spectacularly preserved associated skeleton of an individual containing much of the skull, pectoral and pelvic girdles, forelimb and hindlimb, and parts of the vertebral column including much of the tail. The unprecedented detail of the anatomy indicates that Asilisaurus kongwe had a unique skull that was short and had both a premaxillary and dentary edentulous margin, but retained a number of character states plesiomorphic for Archosauria, including a crocodylian‐like ankle configuration and a rather short foot with well‐developed metatarsals I and V. Additionally, character states present across the skeleton of Asilisaurus kongwe suggest it is more closely related to Silesaurus opolensis than to dinosaurs; thus suggesting high homoplasy and parallel trends within Silesauridae and within lineages of early dinosaurs. The anatomy of Asilisaurus kongwe and detailed description of early members of clades found outside Dinosauria are clearly needed to untangle the seemingly complex character evolution of the skeleton within avemetatarsalians. Anat Rec, 303:813–873, 2020. © 2019 American Association for Anatomy
Meta-analysis and field synopsis of genetic variants associated with the risk and severity of acute pancreatitis
Authors: van den Berg F. F. , Kempeneers M. A. , van Santvoort H. C. , Zwinderman A. H. , Issa Y. , Boermeester M. A. 
Published: December 2019

Abstract

Background
Genetic risk factors can provide insight into susceptibility for acute pancreatitis (AP) and disease progression towards (infected) necrotizing pancreatitis and persistent organ failure. The aim of the study was to undertake a systematic review of the genetic evidence for AP.

Methods
Online databases (MEDLINE, Embase, BIOSIS, Web of Science, Cochrane Library) were searched to 8 February 2018. Studies that reported on genetic associations with AP susceptibility, severity and/or complications were eligible for inclusion. Meta-analyses were performed of variants that were reported by at least two data sources. Venice criteria and Bayesian false-discovery probability were applied to assess credibility.

Results
Ninety-six studies reporting on 181 variants in 79 genes were identified. In agreement with previous meta-analyses, credible associations were established for SPINK1 (odds ratio (OR) 2·87, 95 per cent c.i. 1·89 to 4·34), IL1B (OR 1·23, 1·06 to 1·42) and IL6 (OR 1·64, 1·15 to 2·32) and disease risk. In addition, two novel credible single-nucleotide polymorphisms were identified in Asian populations: ALDH2 (OR 0·48, 0·36 to 0·64) and IL18 (OR 1·47, 1·18 to 1·82). Associations of variants in TNF, GSTP1 and CXCL8 genes with disease severity were identified, but were of low credibility.

Conclusion
Genetic risk factors in genes related to trypsin activation and innate immunity appear to be associated with susceptibility to and severity of AP.
One, two, three … breakdance and twist
Authors: Aranzulla Tiziana Claudia 
Published: December 2019

AbstractWire breakage during percutaneous coronary intervention is a rare event. It occurs especially when treating complex lesions, and it should be prevented with careful planning of each procedural step. We reported a case in which wire breakage occurred when treating the left anterior descending (LAD)/first diagonal bifurcation with the T‐stenting technique. After careful evaluation of all the available retrieval techniques and failure of the balloon–catheter trapping, the twin‐twisting wires technique (TTWT) was applied. This technique allows the retrieval of a foreign body thanks to its entrapment in the spiral made by two twisting wires. At the first attempt, the broken wire was only withdrawn and not retrieved, while the two twisting wires went broken. The second attempt was performed using stronger wires as twisting wires. The two recently broken fragments were successfully retrieved together with a long proximal remnant of the initially broken wire, which distal tip was further withdrawn. The broken wire was successfully retrieved with the third attempt, together with the previously implanted LAD stent that was accidentally entrapped in the twist. This is the first report of TTWT implementation for the retrieval of a broken wire from a two‐stent bifurcation, both proximal and distal wire remnants and a total of three broken wires. The improvements we made to the technique, tips and tricks, caveats, and suggestions for successful wire retrieval and avoidance of the complications that we experienced are described in detail.
Clinical evaluation of a 31‐year‐old woman with crural monomelic amyotrophy
Authors: Thompson Austin R. , Beckett Brooke , Ensrud Erik R. 
Published: December 2019

AbstractThis report describes the clinical presentation of a female patient diagnosed with crural MMA. Careful clinical correlation is necessary to distinguish crural MMA from other motor neuron diseases. When crural MMA is diagnosed, treatment options aim to alleviate symptoms.
Hyperaldosteronism from a large adrenal adenoma in a patient with bilateral adrenal nodules
Authors: Adapa Sreedhar , Konala Venu Madhav , Naramala Srikanth , Dhingra Hemant , Tower Sean W. , Sahasranam Prem , Zhou Fan , Omololu Olayinka , Gavini Frank , Martin Russell R. 
Published: December 2019

AbstractPrimary aldosteronism (PA) is a potentially reversible cause of uncontrolled hypertension. Early diagnosis and timely management of PA can prevent end‐organ damage. Aldosteronoma Resolution Score (ARS) is a useful tool to predict cure rates and resolution of hypertension after adrenalectomy.
Vascular tumor or malformation of the pediatric airway?
Authors: Pires Joana , Ferreira Mafalda , Moura João Elói , Maricato Felisberto 
Published: December 2019

AbstractDistinguishing airway vascular tumors from malformations can be challenging. Failure to treat a suspected airway hemangioma with a beta‐blocker and systemic corticosteroid should raise suspicion of a possible airway malformation.
Cu−Mn Hydroxyapatite Materials for Toluene Total Oxidation
Authors: Ibrahim Maya , Labaki Madona , Nuns Nicolas , Giraudon Jean‐Marc , Lamonier Jean‐François 
Published: December 2019

AbstractThe oxidation of 800 ppmv toluene in air has been investigated over CuMnOx ((Cu+Mn) loading: 10 wt%) dispersed on hydroxyapatite (Hap: Ca5(PO4)3(OH)) with different molar Cu/Mn compositions (2; 1; 0.5) to be compared with the corresponding supported single transition metal oxide catalysts. The solids have been prepared by wet aqueous co‐impregnation method followed by a calcination at 400 °C for 4 h and physicochemically characterized by different techniques. The catalytic performances of the supported Cu−Mn oxide catalysts revealed the existence of a synergetic effect in terms of activity and selectivity towards CO2 through the formation of Cu−Mn mixed oxides. The strongest synergetic effect is observed for a Cu/Mn molar ratio of 2 as confirmed by the standardized conversion rate values determined at 190 °C (r190) which followed the decreasing sequence (/10−2 h−1): Cu2MnHap (2.57)>CuMnHap (2.04)>CuMn2Hap (1.59)>MnHap (1.13)>CuHap (0.13). The highest activity of Cu2MnHap can be explained by a better reducibility of the active phase in line with a high density of Cu‐O−Mn interactions at the outermost layers as shown by ToF‐SIMS results.