bluuebunny/crossref_metadata_2025_split huggingface dataset:
Safety of Metoclopramide in Traumatic Brain Injury Patients
Authors: Jaadi Said Al , Al-Kindi Yahya , Al-Saadi Tariq 
Published: September 2020

Abstract
Introduction Traumatic brain injuries (TBIs) occur due to severe head assault to a hard object, with headache and vomiting being amongst the most common presenting symptoms. Metoclopramide is an old antiemetic agent that has been used widely for nausea and vomiting in TBI patients.
Aim A systematic review of the literature to investigate the safety of metoclopramide in treating TBI patients.
Methods A literature review was conducted in six databases, where we determined the pertinence of a study to the inclusion criteria by assessing the title, keywords, and abstracts. Five studies were found to be relevant. Data were extracted using multiple variables that were formulated incongruent with the study aim and then further analyzed.
Results The collective sample size was 93 patients with an average of age 38.5 years. As much as 51.6% were male and 48.6% were females. Most patients received 10 mg metoclopramide IV with a percentage of 77.4%, while only 22.5% received 20 mg IV metoclopramide. Seventy-one patients received metoclopramide alone and 22 received combination therapy. Headache was the most common reported side effect (46.2%), followed by anxiety and drowsiness with (39.7%) and (27.9%), respectively. Fatigue was reported in 24.7%, while dystonia was the least common and developed in only 5.3% of patients.
Conclusion Metoclopramide is a common medication used to treat TBI patients in the emergency department. However, the review demonstrated that the central nervous system (CNS) side effect is excepted. Treatments with lower CNS side effects may be better options.
Liver-Directed Therapy for Gastroenteropancreatic NETs in the Era of Peptide Receptor Radionuclide Therapy
Authors: Gonzalez-Aguirre Adrian , Ziv Etay 
Published: September 2020

AbstractGastroenteropancreatic neuroendocrine tumors (GEP-NETs) represent a heterogeneous group of tumors. Current treatment algorithms for these tumors are complex and often require a multidisciplinary approach. Recently, peptide receptor radionuclide therapy (PRRT) was granted Food and Drug Administration approval, making this treatment widely available in the United States. PRRT is now another therapeutic option for patients with GEP-NETs. To date there are no consensus guidelines about how to sequence multiple treatment options. Moreover, there is concern of potential liver toxicity when PRRT is used before or after liver-directed therapies (LDTs). In this review, we describe the characteristics of the most commonly used LDT and their potential interactions with PRRT, as well as specific clinical scenarios that are relevant when deciding on the use of LDT. We also review the limited case series that have been published involving patients treated with different combinations of LDT and PRRT. Finally, we discuss some of the future directions for GEP-NET treatments.
The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango, El Salvador
Authors: Smith Victoria C. , Costa Antonio , Aguirre-Díaz Gerardo , Pedrazzi Dario , Scifo Andrea , Plunkett Gill , Poret Mattieu , Tournigand Pierre-Yves , Miles Dan , Dee Michael W. , McConnell Joseph R. , Sunyé-Puchol Ivan , Harris Pablo Dávila , Sigl Michael , Pilcher Jonathan R. , Chellman Nathan , Gutiérrez Eduardo 
Published: September 2020

Significance
The Tierra Blanca Joven eruption of Ilopango occurred during Maya times but the exact timing and its impact have been controversial. It was thought to be responsible for the anomalously cold decade experienced in the Northern Hemisphere centered at 540 CE, but this date is at odds with archeological evidence that suggests a date near the start of the Early Classic Period (pre-450 CE). Our precise age of 431 ± 2 CE allows us to pinpoint the eruption in proxy records and shows that its impact was apparently limited. It appears to have only had major effects on populations within ∼80 km of the volcano, where the regions were blanketed by decimeters of ash fallout and pyroclastic density currents.
Impacts of different shapes of nanoparticles on SiO
2 nanofluid flow and heat transfer in a liquid film over a stretching sheet
Authors: Bibi Sobia , Elahi Zaffer , Shahzad Azeem 
Published: September 2020

Abstract
The present study manipulates the unsteady film flow and heat transfer of SiO
2 water nanofluid over a stretching sheet under convective boundary conditions. Governing partial differential equations (PDEs) are transformed into a set of nonlinear ordinary differential equations (ODEs) and then solved using BVP4C in MATLAB. The impact of multi-shape SiO
2 nanoparticles along with other pertinent parameters, such as Prandlt, Eckert and biot-number on flow and heat transfer characteristics is examined via graphical simulations. Moreover, the skin-friction coefficient and Nusselt number are also computed and tabulated, numerically. The study reveals that platelet shape of SiO
2 nanoparticles possess the high flow and heat transfer rate. In addition, temperature profile enhances by augmenting volume-fraction parameter and biot-number but the reverse trend is found for slip parameter.
Research on interpolation of NURBS curve based on fractional power
Authors: Zhu Hao , Wang Mulan , Wang Baosheng 
Published: September 2020

Abstract
According to the problem of discontinuous of jerk and low rate of federate change in S-shape federate control method, a jerk-limited federate control scheme which reduces the shock to machine tool in interpolating is presented. The constraints are analyzed from the angle of bow height error and acceleration. The simulation result shows that this method can improve the feed speed faster, realize the smooth transition of acceleration, and reduce NURBS Flexible impact on machine tool during curve interpolation.
Frequency response calculations of carbon nanotube based nanothermophones
Authors: Hu Hanping , Zhang Kai , Wang Dongdong 
Published: September 2020

Abstract
Due to the extraordinary high thermal conductivity and low heat capacity, carbon nanotube (CNT) has shown a great potential as a thermo-acoustic (TA) material recently. It can be used to fabricate novel TA loudspeaker free of magnets and moving parts, a promising device that directly converts thermal energy into acoustic energy. In this paper, we have systemically analysed the frequency responses of the dot/wire/film TA emission from CNTs by using the equations we derived for acoustic field of TA emission from point source and arbitrary source. Formulas used for TA calculation from near-field to far-field can be the same. The dependence of sound pressure level (SPL)-frequcecy response of all kinds of CNT based nanothermophones on distance and angle are investigated in detail. It is found that TA sound pressure fluctuates in near-field, while increases linearly with logarithmic frequency in far-field. The amplitude of near-field fluctuation increases with increasing distance, but the frequency cycle of the fluctuation decreases and tends to be a constant depending on angle. These studies lay the foundation for further development of CNT based nanothermophones.
Design and analysis based on RecurDyn of the electric crawler type remote controlled hedge trimmer
Authors: Zhan Ziquan , Si Guimao , Zhi Jingjing , Liu Le 
Published: September 2020

Abstract
The electric crawler type remote controlled hedge trimmer is designed to reduce the emission and change the present status that hedges on the both sides of the highway are trimmed manually, which wastes much time and increase the labor costs. The hedge trimmer is designed in this article according to the working conditions and objects; the author analyses its dynamic stability in the typical working environments by RecurDyn. And the research indicates that the electric crawler type remote controlled hedge trimmer has the reasonable design to perform a great dynamic stability.
An algorithm of eliminating spike of the measured excavator load spectrum signal based on peak-valley extraction
Authors: Xiang Qingyi , Wang Penghui , Li Yao 
Published: September 2020

Abstract
The spike of the original measured load spectrum signal has great influence on the fatigue life prediction, so it must be identified and eliminated accurately. According to the variation law of the strain and force signals collected by the excavator load spectrum test, and the characteristics of the spikes contained therein, a spike elimination algorithm based on “peak-valley extraction” was proposed. In this algorithm, the spikes of digital signal is discriminated and corrected according to the changing trend of signal. The results of both the simulation test and the industrial example show that, the algorithm based on “peak-valley extraction” can accurately distinguish the spike from the normal signal. The principle of the algorithm is clear, the computational complexity is low, and the result is true and reliable, which lays a data foundation for the subsequent fatigue life prediction and fatigue reliability evaluation.
Current situation and key technology analysis of downhole blow-out preventer
Authors: Wang Guo , Wang Zhihua , Niu Xinming , Deng Song , Liu Yali , Fan Hongkang , Hu Yanfeng , Ma Dongju 
Published: September 2020

Abstract
It is difficult to meet the safety requirements of the existing well control technology with oil & gas exploration and development to deep complex formation. Therefore, it is important to carry out the analysis and research work of new blow out preventers. The downhole blowout preventer can provide a sealing well near the drill bit, which could eliminate the overflow in the bud. Thus, the downhole blowout preventer will be an additional protect barrier for the existing well control procedure. This paper introduces domestic and foreign downhole BOP situation, and analysis the structure and technical features of these downhole BOPs. The author discusses key technology of downhole BOP on the basis of analyzing the defect of the existing technology. It could be helpful for the research of downhole blowout preventer.
Adaptive inverse of piezoelectric bimorph actuator with Prandtl-Ishlinskii model for wide-band tracking control
Authors: Chen Yuansheng , Wang Zhou , Wang Hao , Chen Changshun 
Published: September 2020

Abstract
A major defect of piezoelectric bimorph actuators is that the control accuracy is limited by the hysteresis nonlinearity, especially in the wide band. In this paper, an adaptive control method is proposed for hysteresis compensation. A comparison of PID control, inverse control with Prandtl-Ishlinskii (PI) model, adaptive inverse control with PI model, adaptive inverse control with correction network were performed in wide-band tracking application. The experimental results demonstrate that in low frequency conditions (0.1Hz∽1Hz), the above methods have good control performances, and the tracking error is not much different, but under high frequency conditions (5Hz~20Hz), the tracking error of adaptive with PI model and adaptive inverse control with correction network are much better, the RMS tracking error of the piezoelectric bimorph actuators has been reduced from 0.3013 to 0.0489, the experimental results show it performs well in wide-band application.
Research on coating method of thermal conduction silicone grease for spacecraft equipment based on stencil printing
Authors: Guo Tao , Wang Dongmei , Guo Zhanping , Fan Xing , Zhang Zhilong 
Published: September 2020

Abstract
Thermal conduction silicone grease coating is one of the most important methods for passive temperature control of spacecraft equipment. It is difficult to have quantitative control over coating thickness and coating uniformity by manual coating method. This paper introduces the application, coating method and heat transfer mechanism of thermal conduction silicone grease, and proposes a thermal conduction silicone grease coating method for spacecraft equipment based on stencil printing. Also, this paper proves that the method is feasible with pull-off test, thermal vacuum test and thermal conduction test. The test results found that the contact rate of thermal conduction silicone grease with stencil coating is higher than that with manual coating; stencil coating does not cause abnormal overflow of thermal conduction silicone grease; the thermal conduction with stencil coating is nearly the same as that with manual coating.
Modelling of squeeze film between parallel rectangular plates of finite length considering inertia effects
Authors: Li Xueping , Luo Xinhao , Jiang Wei 
Published: September 2020

Abstract
Squeeze film of finite length rectangular plate is widely used in MEMS devices, immersion lithography machines and other engineering fields. The damping force of squeeze film of finite length rectangular plates can be obtained by multiplying the solution of infinite length rectangular plates with a correction factor depending on the aspect ratio. Whether the correction factor is the same for the inertia force is attractive to be studied. The distributions of velocity and pressure are obtained by solving the 3D Navier–Stokes(NS) equations with free and half sealed outlets, which shows the leakage of flow in the length direction causes the drop of maximum pressure comparing with the infinite case, which is about 56.6% for square plates. The squeeze film force ratios for 3D to 2D models with different aspect ratios have been obtained under the conditions of different film thickness, viscosity and rectangular width. It is concluded that the correction factor of damping force can be used to modify the inertia force. The damping and inertia coefficients can be easily extracted from the modified analytical solution of parallel rectangular squeeze film with finite length, which can be applied to the modelling of system dynamics.
An optimization and test method for ducted fans based on CFD
Authors: Liu Liang , Lyu Qiongying , Liu Guosong 
Published: September 2020

Abstract
Some unmanned aircrafts with ducted fan systems are characterized by high efficiency, structural safety and good stability. As a major part of such aircrafts, the ducted fan plays an important role in performance. However, changes in the fan blade structure will influence the fan action. First, from a manufacturing point of view, materials and gate positions were selected. The injection molding process parameters were optimized based on an orthogonal testing analysis method, and this optimization process reduced the warpage by 36.4%. Then, the flow fields of the ducted fans in the theoretical and deformed models were compared and analyzed with SolidWorks computational fluid dynamics (CFD). Finally, the wind velocity values at different distances from the nozzle outlet of the ducted fan were obtained using a wind speed measurement experiment system. The results from the model comparisons showed that fan blade deformation reduced the wind speed by approximately 5%.
An intelligent design method and system for the silage harvester cutter
Authors: Fan Baoxin , Niu Kang , Yang Qizhi , Zhou Liming , Yuan Yanwei , Fang Xianfa 
Published: September 2020

Abstract
An intelligent design method is proposed to meet the requirements of multi-functional, customization and diversification of the silage harvester cutter. A reasoning model is built based on axiomatic design method. A hierarchical mapping structure and a design case library model are established. A precise search method classified by function is designed on the basis of the grey relational analysis. An intelligent design system for silage harvester cutter is developed according to axiomatic design and exemplary reasoning technology. A physical cutter is designed and manufacture. It turns out that the intelligent design system for silage harvester cutter works well. The intelligent design system can be used to design product efficiency and effectively.
Structural condition monitoring system of steam/water piping in thermal power plant and its application
Authors: Wan Yu , Yin Jiyang , Jin Chuanling , Liu Shitao 
Published: September 2020

Abstract
In view of the steam/water piping outside the boiler of thermal power unit, considering its spatial structure characteristics of long distance, large drop and the working conditions under high temperature, high pressure and flexible operation. On the base of the static and dynamic analysis of the structure, the key nodes and parameters of monitoring were selected, the method of sensor installation and debugging was put forward, which was easy to maintain and reliable. A distributed monitoring data acquisition and digital processing analysis system was developed. The monitoring results showed that the monitoring system ran stably and reliably, and the test data of each node could accurately reflect the structural state of the piping. The monitoring system has a strong engineering application value.
Thermal stress analysis of refractory linings in a hot blast stove
Authors: Hwang Yeong-Maw , Lee Yu-Min 
Published: September 2020

Abstract
The functions of hot blast stoves are to transfer the waste heat in the exhaust gas from a blast furnace to checker bricks in the center of a hot blast stove, then transfer the heat from the elevated checker bricks to newly input fresh air. After that, the heated fresh air is sent back to the blast furnace to continue the chemical reaction. Heat exchange is performed by the checker bricks and the refractory silica bricks at inner layer of linings. The middle layer of the linings is composed of refractory insulation bricks and outer layer is covered with a steel shell to maintain structural stability. Refractory bricks are brittle materials, and their allowable tensile strength is low. A finite element software ANSYS APDL is used to analyse heat transfer in the multi-layer refractory bricks. The temperature distribution in the refractory bricks in the radial direction are obtained. Thermal stress and strain in the refractory linings are investigated to design the layout of the refractory bricks and the space width between the insulation bricks. The results show that if the gas temperature near the inner surface of the linings is 1250°C, the total thickness of the insulation bricks in the radial direction should be larger than 420 mm to make the surface temperature of the steel shell lower than 120°C. The simulation results can be used as a guideline for the refractory linings design.
Research on a new open water-brake method for double-track rocket sled test
Authors: Xia Hongli , Hu Bing , Tian Jianming , Lv Shuiyan 
Published: September 2020

Abstract
Aiming at the problem of water-brake recovery for double-track rocket sled, an open water-brake method based on U-groove structure was proposed and the structural model was established. Under the condition of commonly used requirements, the brake effect was evaluated through the classic fluid mechanics theory, and the brake efficiency and safety were studied using two analytical methods of fluid-structure interaction and statics. The results showed that the open water-brake method was feasible in principle. Compared with the water bucket, the open brake device had the advantages of simple structure and convenient processing, and the phenomenon of water blockage would not occur and affect the brae efficiency and test safety. At the same brake speed, the open brake device could generate higher brake force. Recommendations for follow-up work were given before the open water-brake method was officially put into use.
Design of a compact microwave-absorbing load based on sintered material FeSiAl
Authors: Zhang Fang , Shen Lianguan , Pei Yuanji 
Published: September 2020

Abstract
The dummy load in the terminal of traveling wave tubes is an important component of compact high-power electron linear accelerators. To develop high-power loads and miniaturize the accelerators, a microwave-absorbing material FeSiAl coated by a special sintering process is employed to enhance the efficiency of attenuation. Based on the method of multistate and multithickness, the complex permittivity and permeability of the material FeSiAl was obtained. And the design of a compact S-band dummy load was done by means of an engineering design and analysis system. With a very short length of less than 250mm, this dummy load is able to dissipate 10kW residual power to ensure the security of the accelerator. It can provide an important reference for the design of the high-power compact dummy load.
Analysis of key factors affecting the non-limiting state reactance of superconducting fault current limiter
Authors: Jia Yuelong , Yuan Jiansheng 
Published: September 2020

Abstract
With the rapid development of the power grid, the voltage level is getting higher, and the degree of interconnection is becoming stronger. As a result, the level of the short-circuit fault current of the power grid keeps increasing, which seriously threatens the security of the power grid. The saturated-core superconducting fault current limiter (SCSFCL) is a new type of current limiting device, which can effectively limit the short-circuit current without influencing the flexibility of the power grid. The non-limiting state reactance is very important to the normal operation of the power line protected by the SCSFCL, but there is little detailed analysis of the key factors affecting its non-limiting state reactance so far. In this paper, the effects of the height of AC coil, the turns of AC coil, the cross-section area of the iron core and the excitation of the DC coil on the non-limiting state reactance are analysed and verified by simulation with ANSYS Maxwell. Finally, the design suggestions are put forward, including the method of designing the DC excitation value of the superconducting coil and how the key factors affect the non-limiting state reactance.
Distribution network topology identification method based on matching loop power
Authors: Chen Yaojun , Deng Jun , Zhang Xiaochun , Zhao Jianjiang , Feng Shenshen , Chen Wujun 
Published: September 2020

Abstract
The topology of the distribution network often changes during routine maintenance and expansion. In addition, the real-time measurement data and the number of configured sensors is limited, and the switch state lacks of real-time telemetry, which causes the topology generator to often fail to obtain actual structure of distribution network. At present, the common topology identification methods are not well adapted to the above characteristics of the distribution network. Therefore, in order to avoid the state estimation distortion of the distribution network caused by serious errors in the distribution network topology, a new topology identification method is proposed. The method determines the possible topologies based on the matching loop power and performs state estimation on the possible topologies based on the common measured values. According to the state evaluation result and the measured value, thereby based on the highest matching degree, it is determined that the topology is a trusted topology, that is, an actual topology. The proposed method realizes the quantitative evaluation of the topology, simplifies the topology identification process, and reduces the computational complexity of the topology identification process. Finally, the effectiveness and practicality of the method are verified through related cases.
Research on switching overvoltage suppression of 35 kV shunt reactor
Authors: Yu Bing , Yu Gang , Zheng Yiming , Zhou Luyao , Li Chen 
Published: September 2020

Abstract
In recent years, a number of equipment abnormal events caused by operating overvoltage have occurred during the interruption of 35 kV shunt reactors, which jeopardizes the safe and stable operation of the grid. In order to explore the mechanism of operating overvoltage when 35 kV shunt reactor is cut off and the effect of various suppression measures, this paper carries out simulation analysis and research, mainly considers several factors to the effect of overvoltage, such as bus outlet, circuit breaker switching position and overvoltage protector.