bluuebunny/crossref_metadata_2025_split huggingface dataset:
Simplified calibration process and uncertainty assessment for sampling large numbers of single-use thermistors for upper-air temperature measurement
Authors: Yang Inseok , Kim Sunghun , Lee Young Hee , Kim Yong-Gyoo 
Published: December 2020

Abstract
Thermistors for upper-air temperature measurement are commonly used only once in radiosonde sounding. Considering that large numbers of thermistors are used for networks of measurements and that the thermistors are cheap, the calibration of individual thermistors at several calibration points is considered impractical. In this work, due to economic considerations, a method in which a subset of thermistors are selected for calibration was devised, and the uncertainty attributed to the sampling process was assessed. After having calibrated 32 thermistors at full calibration points between –70 °C and 40 °C, we demonstrated a simplified process and uncertainty assessment that involve sampling of only a few thermistors for the full calibration. From the average temperature deviation

δ
T

‾

and the standard deviation s of

δ
T

‾

for the five sampled thermistors expressed in terms of the temperature differences and their dispersion, the expanded interval (

δ
T

‾

−5s,

δ
T

‾

+ 5s) can include more than 95% of the thermistors with a level of confidence of 95%. From a simple simulation, assuming that the characteristics of thermistors from the same batch are normally distributed, the coverage factor to be multiplied by the sample standard deviation can be calculated for different sample sizes, target fractions of thermistors to be covered, and levels of confidence. This technique can be extended to efficiently calibrate a large number of single-use sensors from the same batch, and it can be an economical solution for finding a balance between accuracy and efficiency in such cases.
Verifying the band gap narrowing in tensile strained Ge nanowires by electrical means
Authors: Bartmann M G , Sistani M , Glassner S , Salem B , Baron T , Gentile P , Smoliner J , Lugstein A 
Published: December 2020

Abstract
Group-IV based light sources are one of the missing links towards fully CMOS compatible photonic circuits. Combining both silicon process compatibility and a pseudo-direct band gap, germanium is one of the most viable candidates. To overcome the limitation of the indirect band gap and turning germanium in an efficient light emitting material, the application of strain has been proven as a promising approach. So far the experimental verification of strain induced bandgap modifications were based on optical measurements and restricted to moderate strain levels. In this work, we demonstrate a methodology enabling to apply tunable tensile strain to intrinsic germanium

111

nanowires and simultaneously perform in situ optical as well as electrical characterization. Combining I/V measurements and μ-Raman spectroscopy at various strain levels, we determined a decrease of the resistivity by almost three orders of magnitude for strain levels of ∼5%. Thereof, we calculated the strain induced band gap narrowing in remarkable accordance to recently published simulation results for moderate strain levels up to 3.6%. Deviations for ultrahigh strain values are discussed with respect to surface reconfiguration and reduced charge carrier scattering time.
Hydrophobic surface-assisted SiO2/DI-water nanofluids for enhancing heat transfer and reducing flow resistance
Authors: Gao Dongdong , Bai Minli , Hu Chengzhi , Lv Jizu , Gao Linsong , Li Yang , Zhang Xue 
Published: December 2020

AbstractNanofluids for heat transfer application suffer from inevitable pump power consumption and adhesion effect with interface during flow. The hydrophobic treatment for heat transfer surface may be one of the most prospective strategies to achieve heat transfer enhancement and flow resistance reduction. However, the limitations of hydrophobic treatment technique and process make it difficult to fabricate desirable large size and high curvature hydrophobic surface. Herein, a facile displacement reaction method is applied to prepare the lath-like silver crystals and micro-nano gaps in the inner surface of copper tube with assistance of benzoic acid dispersant. The result shows that the convective heat transfer coefficient increases to 18.1% and the Darcy friction factor decreases to 4.9% at the volume concentration of 2.0% when SiO2/DI-water (deionized water) nanofluids flow through the hydrophobic surface. The hydrophobic surface-assisted strategy may provide an effective scheme for wide applications of nanofluids in heat exchange equipment.
Novel rivaroxaban—loaded poly(lactic-co-glycolic acid)/poloxamer nanoparticles: preparation, physicochemical characterization, in vitro evaluation of time-dependent anticoagulant activity and toxicological profile
Authors: Machado Monique Etnea , de Souza Furtado Priscila , da Costa Bernardes Araújo Cristina , Simon Alice , de Moraes Marcela Cristina , Rodrigues Pereira da Silva Luiz Cláudio , do Carmo Flávia Almada , Cabral Lucio Mendes , Sathler Plínio Cunha 
Published: December 2020

Abstract
Rivaroxaban (RXB), an oral direct factor Xa inhibitor, presents innovative therapeutic profile. However, RXB has shown adverse effects, mainly due to pharmacokinetic limitations, highlighting the importance of developing more effective formulations. Therefore, this work aims at the preparation, physicochemical characterization and in vitro evaluation of time-dependent anticoagulant activity and toxicology profile of RXB-loaded poly(lactic-co-glycolic acid) (PLGA)/poloxamer nanoparticles (RXBNps). RXBNp were produced by nanoprecipitation method and physicochemical characteristics were evaluated. In vitro analysis of time-dependent anticoagulant activity was performed by prothrombin time test and toxicological profile was assessed by hemolysis and MTT reduction assays. The developed RXBNp present spherical morphology with average diameter of 205.5 ± 16.95 nm (PdI 0.096 ± 0.04), negative zeta potential (−26.28 ± 0.77 mV), entrapment efficiency of 91.35 ± 2.40%, yield of 41.81 ± 1.68% and 3.72 ± 0.07% of drug loading. Drug release was characterized by an initial fast release followed by a sustained release with 28.34 ± 2.82% of RXB available in 72 h. RXBNp showed an expressive time-dependent anticoagulant activity in human and rat blood plasma and non-toxic profile. Based on the results presented, it is possible to consider that RXBNp may be able to assist in the development of promising new therapies for treatment of thrombotic disorders.
High performance ionic-liquid-gated air doped diamond field-effect transistors
Authors: Hsu Bo , Farid Sidra , Averion-Puttrich Joseph , Sumant Anirudha V , Stroscio Michael A , Dutta Mitra 
Published: December 2020

AbstractWe report successful fabrication of high performance ion-gated field-effect transistors (FETs) on hydrogenated diamond surface. Investigations on the hydrogen (H)-terminated diamond by Hall effect measurements shows Hall mobility as high as ∼200 cm2V−1s−1. In addition we demonstrate a rapid fabrication scheme for achieving stable high performance devices useful for determining optimal growth and fabrication conditions. We achieved H-termination using hydrogen plasma treatment with a sheet resistivity as low as ∼1.3 kΩ/sq. Conductivity through the FET channel is studied as a function of bias voltage on the liquid ion-gated electrode from −3.0 to 1.5 V. Stability of the H-terminated diamond surface was studied by varying the substrate temperature up to 350 °C. It was demonstrated that the sheet resistance and carrier densities remain stable over 3 weeks in ambient air atmosphere even at substrate temperatures up to 350 °C, whereas increasing temperature beyond this limit has effected hydrogenation. This study opens new avenues for carrying out fundamental research on diamond FET devices with ease of fabrication and high throughput.
3D synthetic aperture imaging with a therapeutic spherical random phased array for transcostal applications
Authors: Zubair Muhammad , Dickinson Robert J 
Published: December 2020

Abstract
Experimental validation of a synthetic aperture imaging technique using a therapeutic random phased array is described, demonstrating the dual nature of imaging and therapy of such an array. The transducer is capable of generating both continuous wave high intensity beams for ablating the tumor and low intensity ultrasound pulses to image the target area. Pulse-echo data is collected from the elements of the phased array to obtain B-mode images of the targets. Since therapeutic arrays are optimized for therapy only with concave apertures having low f-number and large directive elements often coarsely sampled, imaging can not be performed using conventional beamforming. We show that synthetic aperture imaging is capable of processing the acquired RF data to obtain images of the field of interest. Simulations were performed to compare different synthetic aperture imaging techniques to identify the best algorithm in terms of spatial resolution. Experimental validation was performed using a 1 MHz, 256-elements, spherical random phased array with 130 mm radius of curvature. The array was integrated with a research ultrasound scanner via custom connectors to acquire raw RF data for variety of targets. Imaging was implemented using synthetic aperture beamforming to produce images of a rib phantom and ex vivo ribs. The array was shown to resolve spherical targets within ±15 mm of either side of the axis in the focal plane and obtain 3D images of the rib phantom up to ±40 mm of either side of the central axis and at a depth of 3–9 cm from the array surface. The lateral and axial full width half maximum was 1.15 mm and 2.75 mm, respectively. This study was undertaken to emphasize that both therapy and image guidance with a therapeutic random phased array is possible and such a system has the potential to address some major limitations in the existing high intensity focused ultrasound (HIFU) systems. The 3D images obtained with a therapeutic array can be used to identify and locate strong scattering objects aiding to image guidance and treatment planning of the HIFU procedure.
A combined actinometry approach for medium pressure N2–O2 plasmas
Authors: Caplinger James E , Perram Glen P , Adams Steven F 
Published: December 2020

Abstract
An argon actinometry approach which uses the 777 nm and 844 nm atomic oxygen lines along with the common N2/

N

2

+

line ratio method is used to experimentally investigate the excitation mechanisms of the O(3p5P) state in medium pressure (0.75 Torr) N2–O2 plasmas. The method provides strong evidence that metastable excitation from the O(3s5S◦) state is an important excitation mechanism for O(3p5P) state for these conditions. The strong dependence of this additional mechanism on electron density along with the use of the N2/

N

2

+

line ratio method allow for the simultaneous determination of effective electron temperature, dissociation fraction, metastable O(3s5S◦) density and electron density. Predicted electron temperatures, electron densities and dissociation fractions are consistent with those found for similar discharges in prior studies. Additionally, we investigate the efficacy of using the observed 616 nm atomic oxygen line from the O(4d5D◦) state for actinometry, which could open the door to a novel and comprehensive actinometry technique.
Investigate the effects of salinity and temperature on the surface tension of a electromagnetic water
Authors: Mghaiouini Redouane , Garmim Toufik , Monkade Mohamed , EL Bouari Abdeslam 
Published: December 2020

Abstract
The surface tension of the water-air interface was measured using the falling drop method under the effect of a 40 nT low-frequency electromagnetic field. It was found that the surface tension decreased proportionally with an increase in the magnetization time. The surface tension decreased for different NaCl concentrations and also for magnetized water at different temperatures. One possible explanation for this is that breaking hydrogen bonds decreases the Helmholtz free energy, which further decreases the surface tension Another explanation is that the Lorentz force can amplify the surface excitation of the ripples, increase the surface pressure at the surface, and thus decrease the surface tension. Statistical analysis showed that our experimental results are significant.
Research On Data Mining Algorithm In Power Marketing Analysis
Authors: Wang Hao Miao 
Published: December 2020

Abstract
In the analysis of power market economic evaluation indicators, it is more common to use technical data mining for data calculation based on technology maturity analysis. This paper is based on a distributed computing platform for data mining, and parallelizes the traditional FP-Growth algorithm, so that the FP-Growth algorithm can be applied to the mining of big data association rules. Experimental results show that the algorithm can greatly improve the efficiency of mining association rules for massive data. The model is trained and tested on a distributed cluster built into the laboratory using customer electricity data, and then the predictions are validated to determine whether the difference between the predicted values and historical data for the same period exceeded the set threshold.
Design Of A Classification Model For The Extraction And Collection Of Garbage Information Based On The Internet Of Things
Authors: Shang Ziqiao , Lin Feipeng 
Published: December 2020

Abstract
As an effective way to alleviate the current problem of garbage in China, garbage classification has been vigorously promoted by relevant government departments in recent years, but its actual performance is still not satisfactory. Therefore, in view of the current difficulties in the treatment of domestic garbage and the promotion of garbage classification in China, we have implemented the extraction of household garbage information based on the Internet of Things technology and mechanical design. Through management methods and information management systems, we can achieve the traceability of household garbage to individuals and follow up in the process of treatment. An innovative garbage collection and transportation treatment model was designed to solve the social pain points to the greatest extent, promote residents to carry out garbage classification independently, and increase the proportion of garbage resource treatment. The current design products mainly include two-dimensional code sorting garbage bags, recognizable sorting household barrels, intelligent split type garbage bins and garbage information management system, and have established a relatively complete management and operation system and points reward and punishment system, which effectively promote the national garbage classification process.
Automatic Turning Manipulator for Cake Production Line
Authors: Meng Fanzhao , Yang Yonghai , Yang Ruiqing , Wei Hongmei 
Published: December 2020

Abstract
In the production process of baking food processing enterprises, cakes, biscuits and other products made by steaming are generally installed in the baking tray and baked in the oven. The temperature of the baking tray is above 100 degrees Celsius when leaving the oven. The high temperature environment is not conducive to the protection of workers. It needs to be left to cool and then be transported, so the production efficiency is low. In order to solve this problem, a method of replacing the manual handling of the baking tray and removing the baked cake product with a turning robot is proposed. At the same time, two methods for improving the design of the cake production line are given, and the structure and use of the two products of the single-column turning manipulator and the articulated turning manipulator are introduced. The single-column turning manipulator consists of a base, a single-column rotating mechanism, a lifting mechanism, a swing arm, a pneumatic gripping mechanism, etc. A frame-type pneumatic gripping mechanism is adopted, and driven by the turning motor, and can realize the turning of the baking tray. The articulated turning manipulator consists of a base, a waist, a big arm, a small arm, a wrist, and a hand actuator. The hand adopts a rotatable square shaft end structure with an electromagnetic device, transforming the cake baking tray to increase the square groove meshed with it, so as to realize the flipping action of the cake baking tray.
Study on Design of the whole vehicle test platform and Modeling simulation for In-wheel motor electric vehicles
Authors: Liu Qiu-Sheng 
Published: December 2020

Abstract
In order to meet the needs of actual vehicle research, the whole vehicle test platform for in-wheel electric vehicles is designed based on the idea of modularity. On the basis of the vehicle test platform, a joint simulation platform for in-wheel motor electric vehicles is established based on CarSim-Simulink, and simulation verification is carried out. The results show that the designed real-vehicle platform scheme is feasible, and the established simulation model has high accuracy, which can simulate the experimental vehicle well, accurately reflect the dynamic performance response of the vehicle, and provide a basis for further control algorithm research and verification.
Exploration of system modeling and simulation methods
Authors: Meng Lin , Gu Ping , Yue Xiaodong , Li Siyu , He Jian 
Published: December 2020

Abstract
With the rapid development of science and technology, simulation has become an indispensable means to study the laws of objective things. This paper introduces the concept, method and challenge of system simulation. The key of modeling in system simulation is put forward. Finally, the common modeling methods of information systems are introduced, and the advantages and disadvantages of different modeling methods and applications are compared and analyzed.
Research on FOD Detection System of Airport Runway Based on Artificial Intelligence
Authors: Yuan Zhong-Da , Li Jia-Qing , Qiu Zhi-Nan , Zhang Yong 
Published: December 2020

Abstract
With the rapid development of the global aviation industry, the number and scale of construction of civil airports around the world are increasing. In this context, the difficulty of aviation safety assurance work has also increased. Foreign object debris on the airport runway is one of the important factors affecting aviation safety and security. Any foreign material, debris or small objects that appear on the airport runway may pose a serious threat to the ground operation safety of the aircraft. Therefore, research on FOD detection is very important.
Development of Intelligent Rice-Wheat Combine Harvesting and Baling Machine
Authors: Tang Huaizhuang , Chen Xiusheng , Xue Zhiyuan , Xing Xiaoming , Li Mengwei , Lv Guodong , Guo Hejia 
Published: December 2020

Abstract
At present, due to the low utilization rate of straw, the environmental problems caused by straw burning are outstanding. Straw turns to a bioenergy technology has made breakthroughs and can be invoked as feed and power generation after treatment. We lack machinery for combining operations of rice-wheat harvesting and straw bundling in China. Because of the current status of rice-wheat harvesting and bundling, which have been successively entered into field operations by two machines, we have developed rice-wheat harvesting, threshing, and straw bundling with smart control. The intelligent rice-wheat combined harvesting and bundling machine with combined functions has completed the development of two prototypes, entrusted an inspection agency to perform inspection and testing, all performance indicators were better than the field safety and operational performance test. The machine integrates the functions of combined harvesting and bundling of rice and wheat and realizes the efficient harvesting of grains and the recycling of straw, which has been well reflected by users and has a fair prospect of promotion and application.
Friction Characteristics of the Spiral Groove Mechanical Seal
Authors: Zhang Penggao , Wei Long , Feng Xiu , Feng Fei 
Published: December 2020

Abstract
Based on Muijderman narrow groove theory, the pressure distribution of lubricant film in a spiral groove mechanical seal was calculated, and the friction characteristics between the end faces were analyzed. It has been found that the rotating speed has a greater influence on friction, and the friction between sealing faces increases with the increase of rotating speed. The friction between the end faces in a spiral groove mechanical seal decreases with the increase of the angle and depth of the spiral grooves.
Experimental study on deep hole drilling of GH4169 alloy
Authors: Liu Zhan Feng , Li Zhan Hui , Han Xiao Lan , Wang Yu 
Published: December 2020

Abstract
GH4169 alloy material has good corrosion resistance, radiation resistance and other excellent properties, and has been widely used in aerospace and other manufacturing fields. At the same time, due to its severe machining hardening phenomenon and high cutting force during machining, it is also one of the typical difficult-to-machine materials, and the deep hole drilling of GH4169 alloy has been rarely studied. In this paper, the deep hole drilling test of GH4169 is studied, and BTA system is adopted in the test, the wear and failure modes of the cutting tool, and the change of chip morphology were analyzed. Results showed that the middle cutter tooth wear focused on central blade, the wear of the center tooth occurs mainly at the tip of the cutter tooth, the wear of edge tooth mainly occurs at the arc of the tool tip where the main cutting edge is connected with the secondary cutting edge: the chips produced by the central cutter tooth are mostly short and small c-shaped chips, the chip produced by the middle tooth is not easy to break the chip, most of which are elongated spiral chip, the cuttings produced by the edge tooth are not easy to discharge, and most of them are hard spiral coils.
Failure Analysis of the Top Reticulated Shell Structure of a 20,000 Cubic Meter Floating Roof Storage Tank
Authors: Du Liang , Xing Shu , Liu Deyu , Yan He , Ren Chaoqun , Tan Huiying 
Published: December 2020

Abstract
The single-layer spherical reticulated shell structure is used as the fixed roof of a 20000 m3 internal floating roof tank. In the process of inspection and maintenance, the reticulated shell collapsed. In this paper, the strength, stiffness and stability of the design structure of the tank roof reticulated shell are calculated based on the finite element model, and the weak points of the shell structure are revealed, and the failure causes of the shell structure are comprehensively analyzed.