bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Survey on Procedural Sedation and Analgesia for Pediatric Facial Laceration Repair in Korea
Authors: Lee Dongkyu , Yeo Hyeonjung , Lee Yunjae , Park Hyochun , Park Hannara 
Published: February 2023

Abstract
Background Most children with facial lacerations require sedation for primary sutures. However, sedation guidelines for invasive treatment are lacking. This study evaluated the current status of the sedation methods used for pediatric facial laceration repair in Korea.
Methods We surveyed one resident in each included plastic surgery training hospital using face-to-face interviews or e-mail correspondence. The health care center types (secondary or tertiary hospitals), sedation drug types, usage, and dosage, procedure sequence, monitoring methods, drug effects, adverse events, and operator and guardian satisfaction were investigated.
Results We included 45/67 hospitals (67%) that used a single drug, ketamine in 31 hospitals and chloral hydrate in 14 hospitals. All health care center used similar sedatives. The most used drug administered was 5 mg/kg intramuscular ketamine (10 hospitals; 32%). The most common chloral hydrate administration approach was oral 50 mg/kg (seven hospitals; 50%). Twenty-two hospitals (71%) using ketamine followed this sequence: administration of sedatives, local anesthesia, primary repair, and imaging work-up. The most common sequence used for chloral hydrate (eight hospitals; 57%) was local anesthesia, administration of sedatives, imaging work-up, and primary repair. All hospitals that used ketamine and seven (50%) of those using chloral hydrate monitored oxygen saturation. Median operator satisfaction differed significantly between ketamine and chloral hydrate (4.0 [interquartile range, 4.0–4.0] vs. 3.0 [interquartile range, 3.0–4.0]; p <0.001).
Conclusion The hospitals used various procedural sedation methods for children with facial lacerations. Guidelines that consider the patient's condition and drug characteristics are needed for safe and effective sedation.
Analysis of the Chest Wall Reconstruction Methods after Malignant Tumor Resection
Authors: Jo Gang Yeon , Ki Sae Hwi 
Published: February 2023

Abstract
Background The chest wall defects can be caused by various reasons. In the case of malignant tumor resection of the chest wall, it is essential to reconstruct the chest wall to cover the vital tissue and restore the pulmonary function with prevention of paradoxical motion. With our experience, we analyzed and evaluated the results and complications of the chest wall reconstructions followed by malignant tumor resection.
Methods From 2013 to 2022, we reviewed a medical record of patients who received chest reconstruction due to chest wall malignant tumor resection. The following data were retrieved: patients' demographic data, tumor type, type of operation, method of chest wall reconstruction of the soft and skeletal tissue and complications.
Results There were seven males and six female patients. The causes of reconstruction were 12 primary tumors and one metastatic carcinoma. The pathological types were seven sarcomas, three invasive breast carcinoma, and three squamous cell carcinomas. The skeletal reconstruction was performed in six patients. The series of the flap were eight pedicled latissimus dorsi (LD) myocutaneous flaps, two pectoralis major myocutaneous flap, two vertical rectus abdominis myocutaneous free flap, and one LD free flap. Among all the cases, only one staged reconstruction and successful reconstruction without flail chest. Most of the complications were atelectasis.
Conclusion In the case of accompanying multiple ribs and sternal defect, skeletal reconstruction would need skeletal reconstruction to prevent paradoxical chest wall motion. The flap for soft tissue defect be selected according to defect size and location of chest wall. With our experience, we recommend the reconstruction algorithm for chest wall defect due to malignant tumor resection.
Model position sensing method for low fineness ratio models in a magnetic suspension and balance system
Authors: Inomata Chiharu , Kuwata Masahide , Yokota Sho , Abe Yoshiaki , Sawada Hideo , Obayashi Shigeru , Asai Keisuke , Nonomura Taku 
Published: February 2023

A new model-position-sensing method for the levitation of models with a low fineness ratio (ratio of the longitudinal length to the diameter) in a magnetic suspension and balance system (MSBS) is proposed. MSBS is an ideal model-support device for wind-tunnel testing, which enables the study of flow fields around blunt bodies without flow disturbances introduced by mechanical support devices, with the aerodynamic forces determined from the magnetic forces using a pre-calibrated relationship. The new method allows wind tunnel experiments without mechanical supports with a low fineness ratio model. This method adopts two line sensors placed parallel to the central axis of the model image and measures the position with a resolution finer than 0.06 mm or deg even for thin model geometries. In addition, measurement errors were reduced by correcting a second-order term in the depth direction of the camera. A low fineness ratio circular cylinder model was levitated following sensor calibration. The model was supported in conditions with and without freestream flow. This position measurement method was also applied to a reentry capsule model. The model was levitated while keeping its position and attitude stabilized near the origin.
Experiment on gas flow field of large-caliber hypersonic balance gun in half-space
Authors: He Miao , Li Zijie , Wang Hao 
Published: February 2023

As one of the main methods to study the characteristics of an object, experiment is the main way to verify the correctness and reliability of numerical results. The hypersonic projectile near the ground launch involves many complex physical phenomena, so the ground surface has an important impact on the flight stability of the projectile and the structural characteristics of the gas flow field. In this paper, we carried out a whole process experiment of a hypersonic projectile from the bottom of the tube to the muzzle based on the 300 mm balance gun. The muzzle pressure and the initial velocity of the muzzle were monitored by the data acquisition system. We obtained the influence of the ground on the gas flow field of the hypersonic projectile through the overpressure data on the ground near the muzzle. Meanwhile, the dynamic characteristics of the launch process are recorded by high-speed photography. The experimental results show that the muzzle shock wave meets the ground, and the reflection phenomenon occurs, forming a wavefront with opposite directions of propagation. It makes the pressure in the lower half of the domain significantly higher than that in the upper half. By analyzing the experimental phenomena and experimental data, this paper shows the development characteristics of the projectile’s flow field, as well as the influence of the ground on the flow field and the motion stability of the projectile.
High-coercivity heavy-rare-earth-free NdFeB sintered magnets developed by doping Ce85Al15 and grain boundary diffusion with Pr70Cu15Al15
Authors: Wong Y. J. , Chang H. W. , Lee Y. I. , Chang W. C. , Chiu C. H. , Mo C. C. 
Published: February 2023

Traditional NdFeB sintered magnets with coercivity larger than 20 kOe, called super-high (SH) level, usually contains considerable amount of high-cost heavy rare earth (HRE), such as Dy or Tb. In this work, high coercivity of 21.4 kOe, which corresponds to SH level, is achieved for HRE-free NdFeB magnet by doping with Ce85Al15 (CeAl) alloy and grain boundary diffusion (GBD) with Pr70Cu15Al15 (PrCuAl) alloy powders, where Ce/RE ratio is about 15% within the magnet. After GBD treatment with PrCuAl on Ce-containing NdFeB magnets, the formation of Pr-containing shell at 2:14:1 grain surface can increase the local magnetic anisotropy filed and therefore enhance the coercivity. Most of Cu and Al, and parts of Ce and Pr appear at grain boundary and triple junction, which can reduce the magnetization of grain boundary phase, strengthen the decoupling effect between grains and thus contribute to high coercivity. This study provides a cost-effective way to obtain high coercivity for HRE-free NdFeB sintered magnet via doping Ce85Al15 and then GBD with Pr70Cu15Al15.
Influence of tensile stress on the magnetic properties of ultra-thin grain-oriented electrical steel
Authors: Li Yongjian , Song Shiping , Dou Yu , Chen Tao 
Published: February 2023

Ultra-thin grain-oriented electrical steel (GOES) with thickness less than 0.1 mm can be used to make the iron core of the reactor and high-power magnetic amplifiers. The design of these electromagnetic devices often relies on the data of magnetic characteristics measured under standard sinusoidal excitation. However, the influence of working conditions such as stress and temperature are ignored. The magnetic properties of the magnetic materials under stress are quite different from those under sinusoidal excitation. It is very important to accurately measure the magnetic properties of ultra-thin GOES under stress conditions. This article presents and analyzes the extensive experimental results of magnetic properties in the rolling direction with uniaxial and biaxial tensile stress applied by piezoelectric materials.
Trophically integrated ecometric models as tools for demonstrating spatial and temporal functional changes in mammal communities
Authors: Short Rachel A. , McGuire Jenny L. , Polly P. David , Lawing A. Michelle 
Published: February 2023

We are in a modern biodiversity crisis that will restructure community compositions and ecological functions globally. Large mammals, important contributors to ecosystem function, have been affected directly by purposeful extermination and indirectly by climate and land-use changes, yet functional turnover is rarely assessed on a global scale using metrics based on functional traits. Using ecometrics, the study of functional trait distributions and functional turnover, we examine the relationship between vegetation cover and locomotor traits for artiodactyl and carnivoran communities. We show that the ability to detect a functional relationship is strengthened when locomotor traits of both primary consumers (artiodactyls, n = 157 species) and secondary consumers (carnivorans, n = 138 species) are combined into one trophically integrated ecometric model. Overall, locomotor traits of 81% of communities accurately estimate vegetation cover, establishing the advantage of trophically integrated ecometric models over single-group models (58 to 65% correct). We develop an innovative approach within the ecometrics framework, using ecometric anomalies to evaluate mismatches in model estimates and observed values and provide more nuance for understanding relationships between functional traits and vegetation cover. We apply our integrated model to five paleontological sites to illustrate mismatches in the past and today and to demonstrate the utility of the model for paleovegetation interpretations. Observed changes in community traits and their associated vegetations across space and over time demonstrate the strong, rapid effect of environmental filtering on community traits. Ultimately, our trophically integrated ecometric model captures the cascading interactions between taxa, traits, and changing environments.
Allosteric mechanism of transcription inhibition by NusG-dependent pausing of RNA polymerase
Authors: Vishwakarma Rishi K. , Qayyum M. Zuhaib , Babitzke Paul , Murakami Katsuhiko S. 
Published: February 2023

NusG is a transcription elongation factor that stimulates transcription pausing in Gram+ bacteria including
B. subtilis
by sequence-specific interaction with a conserved pause-inducing
−
11
TTNTTT
−6
motif found in the non-template DNA (ntDNA) strand within the transcription bubble. To reveal the structural basis of NusG-dependent pausing, we determined a cryo-EM structure of a paused transcription complex (PTC) containing RNA polymerase (RNAP), NusG, and the TTNTTT motif in the ntDNA strand. The interaction of NusG with the ntDNA strand rearranges the transcription bubble by positioning three consecutive T residues in a cleft between NusG and the β-lobe domain of RNAP. We revealed that the RNAP swivel module rotation (swiveling), which widens (swiveled state) and narrows (non-swiveled state) a cleft between NusG and the β-lobe, is an intrinsic motion of RNAP and is directly linked to trigger loop (TL) folding, an essential conformational change of all cellular RNAPs for the RNA synthesis reaction. We also determined cryo-EM structures of RNAP escaping from the paused transcription state. These structures revealed the NusG-dependent pausing mechanism by which NusG-ntDNA interaction inhibits the transition from swiveled to non-swiveled states, thereby preventing TL folding and RNA synthesis allosterically. This motion is also reduced by the formation of an RNA hairpin within the RNA exit channel. Thus, the pause half-life can be modulated by the strength of the NusG-ntDNA interaction and/or the stability of the RNA hairpin. NusG residues that interact with the TTNTTT motif are widely conserved in bacteria, suggesting that NusG-dependent pausing is widespread.
Multimodality in refusals in English as a lingua franca
Authors: Fang Xianming 
Published: February 2023

Abstract
This study investigates how multimodal cues are used for rapport management in refusals in the context of English as a lingua franca (ELF). Ten Chinese and ten Indonesian speakers were put in pairs and conducted role-plays in relation to requests and refusals. After the role-plays, they had immediate interviews to reflect on their own and their partners’ performance. The results suggest that body positions (standing/sitting), smiling voices and smiling facial expressions, and the long gaze aversion are used by ELF refusers to maintain rapport: controlling power relationships, mitigating the force of refusals, and conveying a non-engagement stance. The results show that mitigation in the ELF context is a multimodal achievement which can be intentionally realized through various multimodal cues.
Impact of synthesis temperature and precursor ratio on the crystal quality of MOCVD WSe2 monolayers
Authors: Grundmann Annika , Beckmann Yannick , Ghiami Amir , Bui Minh , Kardynal Beata , Patterer Lena , Schneider Jochen , Kümmell Tilmar , Bacher Gerd , Heuken Michael , Kalisch Holger , Vescan Andrei 
Published: February 2023

Abstract
Structural defects in transition metal dichalcogenide (TMDC) monolayers (ML) play a significant role in determining their (opto)electronic properties, triggering numerous efforts to control defect densities during material growth or by post-growth treatments. Various types of TMDC have been successfully deposited by MOCVD (metal-organic chemical vapor deposition), which is a wafer-scale deposition technique with excellent uniformity and controllability. However, so far there are no findings on the extent to which the incorporation of defects can be controlled by growth parameters during MOCVD processes of TMDC. In this work, we investigate the effect of growth temperature and precursor ratio during MOCVD of tungsten diselenide (WSe2) on the growth of ML domains and their impact on the density of defects. The aim is to find parameter windows that enable the deposition of WSe2 ML with high crystal quality, i.e. a low density of defects. Our findings confirm that the growth temperature has a large influence on the crystal quality of TMDC, significantly stronger than found for the W to Se precursor ratio. Raising the growth temperatures in the range of 688 °C to 791 °C leads to an increase of the number of defects, dominating photoluminescence (PL) at low temperatures (5.6 K). In contrast, an increase of the molar precursor ratio (DiPSe/WCO) from 1000 up to 100 000 leads to less defect-related PL at low temperatures.
Electroplating-based engineering of plasmonic nanorod metamaterials for biosensing applications
Authors: Sahoo Mihir Kumar , Anand VS Abhay , Kumar Anshuman 
Published: February 2023

Abstract
Sensing lower molecular weight in a diluted solution using a label-free biosensor is challenging and requires a miniaturized plasmonic structure, e.g. a vertical Au nanorod (AuNR) array-based metamaterials. The sensitivity of a sensor mainly depends on transducer properties and hence for instance, the AuNR array geometry requires optimization. Physical vapour deposition methods (e.g. sputtering and e-beam evaporation) require a vacuum environment to deposit Au, which is costly, time-consuming, and thickness-limited. On the other hand, chemical deposition, i.e. electroplating deposit higher thickness in less time and at lower cost, becomes an alternative method for Au deposition. In this work, we present a detailed optimization for the electroplating-based fabrication of these metamaterials. We find that slightly acidic (6.0 < pH < 7.0) gold sulfite solution supports immersion deposition, which should be minimized to avoid uncontrolled Au deposition. Immersion deposition leads to plate-like (for smaller radius AuNR) or capped-like, i.e. mushroom (for higher radius AuNR) structure formation. The electroplating time and DC supply are the tuning parameters that decide the geometry of the vertically aligned AuNR array in area-dependent electroplating deposition. This work will have implications for developing plasmonic metamaterial-based sensors.
Nanodiamond surface as a photoluminescent pH sensor
Authors: Padrez Yaraslau , Golubewa Lena , Bahdanava Anastasiya , Jankunec Marija , Matulaitiene Ieva , Semenov Dmitry , Karpicz Renata , Kulahava Tatsiana , Svirko Yuri , Kuzhir Polina 
Published: February 2023

Abstract
A systematic spectroscopic characterization of highly homogeneous water suspensions of ‘buckydiamonds’ comprising sp3 cubic nanodiamond (ND) core covered with disordered sp2 shell densely decorated with oxygen-containing groups demonstrates the excitation-wavelength-dependent photoluminescence (PL) given by at least four types of specific structures on the ND surface (hydroxyl, C=O containing ketones, carboxylic anhydrides, and carboxyl groups). PL properties of NDs suspensions possess concentration-dependent behavior revealing tendency of NDs to agglomerate. PL of NDs has been found to be strongly sensitive to pH of the environment in wide range of pH values, i.e. 2–11. We disclosed the mechanisms of pH sensitivity of the ‘buckydiamond’ and proved that it can serve as all-optical sensor of tiny pH variations suitable for further exploitation for pH sensing locally in the area where NDs have been delivered for any purpose, e.g. bioimaging or therapeutic needs.
A self-powered sound-driven humidity sensor for wearable intelligent dehydration monitoring system
Authors: Hu Lihong , Zhong Tianyan , Long Zhihe , Liang Shan , Xing Lili , Xue Xinyu 
Published: February 2023

Abstract
Self-powered wearable sensing systems have attracted great attention for their application in continuous health monitoring, which can reveal real-time physiological information on the body. Here, an innovative self-powered sound-driven humidity sensor for wearable intelligent dehydration monitoring system has been proposed. The sensor is primarily comprised of PTFE membrane, ZnO nanoarrays and Ti thin film. The piezoelectric/triboelectric effect of ZnO nanoarrays/PTFE membrane is coupled with the humidity sensing process. Sound wave can drive PTFE membrane to vibrate, and the contact and separation between PTFE and ZnO can generate electrical signals through piezoelectric/triboelectric effect. At the same time, the surface of the nanostructures can absorb the water molecules, which will influence the electrical output of the device. The device can convert sound energy into electrical output without any external electricity power supply, and the outputting voltage decreases with increasing relative humidity, acting as the sensing signal. The sensor has been integrated with data processing unit and wireless transmission module to form a self-powered wearable intelligent dehydration monitoring system, which can actively monitor the humidity of exhaled breath and transmit the information to the mobile phone. The results can open a possible new direction for the development of sound-driven gas sensors and will further expand the scope for self-powered nanosystems.
A novel vessel segmentation algorithm for pathological en-face images based on matched filter
Authors: Hu Derong , Pan Lingjiao , Chen Xinjian , Xiao Shuyan , Wu Quanyu 
Published: February 2023

AbstractThe vascular information in fundus images can provide important basis for detection and prediction of retina-related diseases. However, the presence of lesions such as Coroidal Neovascularization can seriously interfere with normal vascular areas in optical coherence tomography (OCT) fundus images. In this paper, a novel method is proposed for detecting blood vessels in pathological OCT fundus images. First of all, an automatic localization and filling method is used in preprocessing step to reduce pathological interference. Afterwards, in terms of vessel extraction, a pore ablation method based on capillary bundle model is applied. The ablation method processes the image after matched filter feature extraction, which can eliminate the interference caused by diseased blood vessels to a great extent. At the end of the proposed method, morphological operations are used to obtain the main vascular features. Experimental results on the dataset show that the proposed method achieves 0.88 ± 0.03, 0.79 ± 0.05, 0.66 ± 0.04, results in DICE, PRECISION and TPR, respectively. Effective extraction of vascular information from OCT fundus images is of great significance for the diagnosis and treatment of retinal related diseases.
Contribution of multiscale analysis to the understanding of friction evolution of aggregates surfaces
Authors: Edjeou Wiyao , Cerezo Veronique , Zahouani Hassan , Do Minh-Tan 
Published: February 2023

Abstract
In this paper, a multiscale texture analysis method is developped and applied to aggregates surfaces to better explain the variation of road friction during polishing process. This method is based on continuous wavelets decomposition. The study is done on five aggregates types by varying aggregates hardness and mineralogical composition. Polishing tests and friction measurement are performed on each formula using Wehner & Schulze appartus to follow the evolution of friction with polishing. At each polishing stage, 3D mapping are made using Alicona Infinite Focus Sensor to follow the evolution of the surface texture. On these cartographies, multiscale texture parameters are calculated and analysed. Correlations between theses parameters and friction show that scales ranging between 0 and 1000 μm seem to be the most relevant to explain friction evolution.