bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on error mechanism analysis and compensation method of Fiber-Optical Current Transformer
Authors: Li Dengyun , Lei Min , Zhang Dandan , Mo Shi , Chai Yongfeng 
Published: September 2019

Abstract
The structure of Fiber-Optical Current Transformer (FOCT) is completely different from that of traditional electromagnetic transformer, and the error analysis method is quite different from that of traditional transformer. However, there is no systematic calculation method for the error of FOCT at present. Starting from the working principle and structure of fiber-optical current transformer, this paper theoretically analyses and deduces all kinds of error sources of FOCT, puts forward the error calculation method of FOCT, calculates the overall error based on the actual parameters of a 200 kV Fiber-Optical Current Transformer, and proposes a method to compensate the measurement error of FOCT by changing the initial phase angle of λ/4 wave plate. The initial phase angle of the λ/4 wave plate with the best error compensation effect is 86 degrees.
Dynamic simulation model of Fiber Optical Current Transformer considering error factors
Authors: Li Dengyun , Li He , Zhang Dandan , Mo Shi , Chai Yongfeng 
Published: September 2019

Abstract
The paper studies and establishes the dynamic model of fiber optical current transformer by MATLAB. The equivalent model of FOCT’s digital closed loop control system is created by reasonably simplifying deviation and feedback of FOCT. By analyzing the four components of FOCT’s main sources of error, 10 factors that cause FOCT measurement errors are obtained. Then the variable 10 error parameters are introduced into the model to establish a dynamic model of fiber optical current transformer considering the error factor. The model can evaluate the performance of the fiber optical current transformer by using the variable FOCT’s error parameters, Also, model dynamically combines the FOCT’s related parameters and environmental factors with the transformer’s transfer characteristics and reflects the influence of FOCT error factors on FOCT performance.
Parameter design and electromagnetic field analysis of electromagnetic biased axial magnetic bearing
Authors: Kong Ruijie , Mei Lei 
Published: September 2019

Abstract
A type of electromagnetic biased axial magnetic bearing is studied. Compared with traditional axial magnetic bearings, it has a smaller external diameter of the thrust plate, which is helpful to improve the critical speed of the rotor in theory. The structural parameters are obtained and finite element model(FEM) is established. The magnetic flux leakage coefficients and the magnetic resistances are calculated. The rationality of parameter design is verified. The results show that the parameter design and the electromagnetic field simulation are in accordance with rationality of the design. Therefore, the magnetic biased axial magnetic bearing is not only simple in structure, but also reasonable in design, which is of great significance to the design of magnetic bearing.
Logistics analysis and simulation in the intelligent manufacturing workshop
Authors: Ni Ping , Wang Yunxia , Chen Di 
Published: September 2019

Abstract
This paper aims to study the internal logistics system of manufacturing enterprises, and use the logistics analysis and modeling methods to plan and simulate the layout of the workshop. Firstly, the SLP (Systematic Layout Planning) method is planned for a specific enterprise. Secondly, the Flexsim software and the ExSpect software are used to simulate the logistics of the planned workshop. The Flexsim software is used to know the facility utilization rate, and the cause of the blockage is analyzed. The improvement measure of adding one casting machine and static furnace is proposed to solve the problem of equipment blockage. The modeling and analysis of the workshop is carried out in combination with Petri net, and the total working hours of production and processing are obtained through ExSpect software simulation.
Diagrams of seasonal and daily hot water consumption by apartment buildings (ab) in the moscow region
Authors: Vasilyev Gregory , Popov Mikhail , Dmitriev Alexander , Vasileva Olga , Kolesova Marina 
Published: September 2019

Abstract
The article presents an analysis of hot water consumption in apartment buildings of the Moscow region. This study was conducted based on monitoring actual data on hot water consumption by apartment buildings (AB) in Moscow and the Moscow region. The results were used to develop a computational model for the daily use of hot water in apartment buildings.
A 43%@0.1V efficiency self-sustaining solar energy harvester in indoor lighting
Authors: Yu Deng-Bang , Liu Xin-Ning , Chen Jing 
Published: September 2019

Abstract
This paper presents a self-sustaining solar energy harvester (EH) based on 130nm process, which consists of a low voltage cold start (CS) circuit and a high efficiency boost charger. The CS circuit makes the boost charger self-sustaining and start the boost circuit from the 100mV input. An adaptive switch frequency modulation (SFM) and switch capacitor modulation (SCM) are proposed to minimize the switch loss and conduction loss of boost charger, thus reduce overall circuit power consumption. The proposed boost charger utilizes a dual voltage technique for reducing the power dissipation of the internal circuit. The efficiency of the boost charger ranges from 43% at V

IN
= 100mV to 65% at V

IN
= 300mV.
Progress toward Barium Tagging in High Pressure Xenon Gas with Single Molecule Fluorescence Imaging
Authors: Byrnes N. , Foss F. W. , Jones B.J.P , McDonald A.D. , Nygren D.R. , Thapa P. , Trinidad A. 
Published: September 2019

Abstract
We present an update on the development of techniques to adapt Single Molecule Fluorescent Imaging for the tagging of individual barium ions in high pressure xenon gas detectors, with the goal of realizing a background-free neutrinoless double beta decay technology. Previously reported progress is reviewed, including the recent demonstration of single barium dication sensitivity using SMFI. We then describe two important advances: 1) the development of a new class of custom barium sensing fluorescent dyes, which exhibit a significantly stronger response to barium than commercial calcium sensing compounds in aqueous solution; 2) the first demonstration of a dry-phase chemosensor for barium ions. This proceeding documents work presented at the 9th Symposium on Large TPCs for Rare Event Detection in Paris, France.
The search for light dark matter with the NEWS-G spherical proportional counter
Authors: Giroux G. , Gros P. , Katsioulas I. 
Published: September 2019

Abstract
The NEWS-G (New Experiment with Spheres - Gas) collaboration searches for dark matter in the form of low-mass Weakly Interacting Massive Particles (WIMPs) using Spherical Proportional Counters (SPCs) filled with gases with low atomic masses. The operation of SEDINE, a 60-cm diameter prototype SPC filled with a mixture of neon and methane and installed at the Laboratoire Souterrain de Modane (LSM) in France, recently set new constraints on the spin-independent WIMP-nucleon scattering cross-section in the sub-GeV/c2 mass region. The collaboration is currently planning the installation a 140-cm ultra-low background SPC in a compact shielding at SNOLAB in Canada. Recent advances in radioactive background control, detector monitoring and sensor development, will provide for this next experimental phase of NEWS-G unprecedented sensitivity to low-mass WIMPs.
Gas and copper purity investigations for NEWS-G
Authors: Knights P. 
Published: September 2019

Abstract
In the search for low mass dark matter particles the NEWS-G collaboration utilises the spherical proportional counter, a novel detector concept. Currently, the next stage of the experiment, NEWS-G@SNOLAB, is under preparation. The choice and processing of construction materials and gases are of paramount importance for the minimisation of experimental backgrounds. The effect of impurities on detector performance, both regarding the gas and construction materials, is presented and the efforts undertaken to maximise the sensitivity of the experiment are discussed. In particular, the method of electroplating a cladding-type ultra-pure copper layer on the inner surface of the detector is detailed and preliminary results are presented.
PICOSEC-Micromegas: Robustness measurements and study of different photocathode materials
Authors: Sohl L , Bortfeldt J , Brunbauer F , David C , Desforge D , Fanourakis G , Franchi J , Gallinaro M , García F , Giomataris I , González-Díaz D , Gustavsson T , Guyot C , Iguaz F J , Kebbiri M , Kordas K , Legou P , Liu J , Lupberger M , Manthos I , Müller H , Niaouris V , Oliveri E , Papaevangelou T , Paraschou K , Pomorski M , Qi B , Resnati F , Ropelewski L , Sampsonidis D , Schneider T , Schwemling P , Scorsone E , van Stenis M , Thuiner P , Tsipolitis Y , Tzamarias S E , Veenhof R , Wang X , White S , Zhang Z , Zhou Y 
Published: September 2019

Abstract
Detectors with a time resolution of 20-30 ps and a reliable performance in high particles flux environments are necessary for an accurate vertex separation in future HEP experiments. The PICOSEC-Micromegas detector concept is a Micro-Pattern Gaseous Detector (MPGD) based solution addressing this particular challenge. The PICOSEC-Micromegas concept is based on a Micromegas detector coupled to a Cherenkov radiator and a photocathode. In this detector concept, all primary electrons are initiated in the photocathode and the time jitter fluctuations are reduced. Different resistive anode layers have been tested with the goal of preserving a stable detector operation in a high intensity pion beam. One important characteristic of a gaseous detector in a high flux environment is the ion backflow (IBF). That can cause damage to more fragile photocathode materials like CsI. Various types of photocathode materials have been tested in order to find a robust solution against IBF bombardment.
Muon tomography with Micromegas: Archaeology, nuclear safety and new developments for Geotechnics.
Authors: Gómez H. , Attié D. , Calvet D. , Coppolani X. , Gallois B. , Kebbiri M. , Lehuraux M. , Magnier P. , Mandjavidze I. , Procureur S. , Vandenbroucke M. 
Published: September 2019

Abstract
Muon tomography, or muography, stands out as a non-invasive technique for the scanning of big objects’ internal structure. It relies on the measurement of the direction changes or absorption of atmospheric muons when crossing the studied object. Proposed several decades ago, the performance achieved in particle detectors in the last years, specially in terms of stability, robustness and precision, has enlarged the possible applications of this technique. Bulk Micromegas represent a well-known technology suitable for the construction of muon telescopes based on these detectors. Thus autonomous and portable instruments have been conceived and constructed at Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA), being able to perform muography measurements in-situ, next to the studied objects. At present, a new muon telescope concept is being developed at CEA, combining a Time Projection Chamber (TPC) readout by a 2D multiplexed bulk Micromegas. This new generation of detectors will enlarge the possible application fields of muography, being specially interesting for geotechnics.
Vacuum characteristics of magnetorheological elastomers
Authors: Bazinenkov A M , Khanbekov I F , Rotar’ A P , Ivanova D A , Mikhailov V P 
Published: September 2019

Abstract
A model of gas evolution from the surface layer of a magnetorheological (MR) elastomer, which is a promising material for use in vacuum systems, is described. The results of research of the partial composition of gases exhaled from the MR elastomer for different heating temperatures depending on the pumping time are given.
Method of creating equivalent circuits of capacitive batteries of pulsed power supplies of powerful technological systems
Authors: Goncharov V D , Yashkardin R V , Volynov A M 
Published: September 2019

Abstract
The article is devoted to the design aspects of pulsed power supplies of technological systems. Experiments had shown that development of such power supplies requires to take into account the resistive and inductive components of the complex impedance of capacitors batteries. The article proposes a method for finding the equivalent circuit of these batteries. The method is based on an approximation of their experimentally measured frequency characteristics. The article also shows that the obtained results for a single battery cannot be distributed to capacitor bank. Presented numerical simulation results shows that the duration of the pulse front depends on the inductive component of the resistance of capacitive elements.
Test results for approval of the type of installation for reproduction of micro-flows of gases in vacuum
Authors: Kologov A V , Gorobei V N , Chernyshenko A A 
Published: September 2019

Abstract
The article presents data on the composition and principle of operation of the unit of reproduction of micro-flows of gases in vacuum, as well as the results of its tests for the purpose of type approval on the state secondary (working) standard unit of gas flow in vacuum.
Determination of the threshold sensitivity of a deposited dielectric film thickness control method based on surface plasmon resonance effect
Authors: Komlev A E , Dyukin R V , Shutova E S 
Published: September 2019

Abstract
The lower boundaries of the real time measuring range of the dielectric film thickness on the sensor surface, the principle of which is based on the effect of the excitation of surface electromagnetic waves (SEW), are determined. The simulation was performed for materials with high and low refractive index.
Reduction of hydraulic resistance in vacuum columns as an effective tool in the formation of energetic rectification units
Authors: Leontiev V S , Romanova N A 
Published: September 2019

Abstract
Using an example of ethylbenzene and diethylbenzene separation, we demonstrate that structured packing with a low specific flow resistance is an effective tool for setting up hardware and energy rectification packages. By replacing conventional plates with structured packing, the flow resistance and vertical temperature gradient are significantly lowered, providing favorable conditions for thermal coupling of the columns. Thermal coupling of the columns in a two-column setup for extraction of rectified ethylbenzene and diethylbenzene provides heating steam savings of 0.13 Gcal per tonne of diethylbenzene.
Development of the automated vacuum test bench for altimeters
Authors: Lillo A V , Stotckaia A D 
Published: September 2019

Abstract
The work is devoted to study characteristics of the compact vacuum test bench, a feature of which is the presence of a programmable control system. During the work, the stages of assembly of the stand and technical requirements are described. Studies are being conducted to assess the build quality of the stand and the operation of the control system.
Computer simulation of nano-thin film condensation process in a vacuum
Authors: Su Chu Trong , Tupik V A , Potapov A A , Margolin V I 
Published: September 2019

Abstract
In this paper, the role of nano-thin film condensation process in thin film technology is shown. It was demonstrated by using the computer simulation method that the abovementioned process determines the quality of the thin film. Proprietary models were used in order to analytically calculate the condensation process of a particle on the potential field of ideal crystal substrate and to simulate the processes of condensation and growth for atoms with isotropic or anisotropic bonds with other atoms. The numerical method is based on the algorithm of a random chosen active atom, the direction of motion of this atom is calculated by the quasi-Newton method and the step of atom movement is considerably shorter than the optimal distance of two atoms.
Rationality evaluation index of asphalt molecular model
Authors: Zhu Jianyong , Zhou Chao 
Published: September 2019

Abstract
In terms of the diversity and complexity of current molecular models of asphalt, this paper proposes the solubility parameter as the evaluation index of asphalt component rationality. The solubility parameters of 22 asphaltenes average molecular models, 3 aromatics average molecular models, 3 saturates average molecular models and 4 resins average molecular models were calculated, according to the principle of similar compatibility, reasonable molecular models of the average asphalt component were selected. A molecular model of asphalt was established based on a four-component test. The glass transition temperature was used as the evaluation index, and the temperature difference between the molecular simulation and the DSC test was less than 1 °C.
A Sticky Situation: Poor Correlation Between Platelet Inhibition Assays
Authors: Dean Christina L , Duncan Alexander , Ingle Ann , Guarner Jeannette , Roback John D , Sullivan Harold C , Maier Cheryl 
Published: September 2019

Abstract
Monitoring antiplatelet therapy is critical in patients undergoing cardiac or neurologic stent placement to ensure adequate platelet suppression and prevent thrombosis. Light transmission aggregometry (LTA) using platelet-rich plasma (PRP) is the gold standard to assess platelet responsiveness to aspirin (ASA) and P2Y12 inhibitors (P2Y12-I). Other platforms for antiplatelet therapy monitoring employ whole-blood aggregometry (WBA) via electrical impedance (EA) or ELISA-based detection of urinary metabolites. The goal of this study was to evaluate the concordance of four antiplatelet therapy monitoring platforms. Blood and urine samples from 20 patients receiving antiplatelet therapy prior to neurologic stent placement were prospectively collected. Blood samples were analyzed by LTA using PRP on the Helena AggRAM and by WBA-EA using the Chrono-log Lumi-aggregometer to assess ASA and P2Y12-I response. For the LTA, the maximum amplitude (MA) of the platelet aggregation curve was determined using high-dose (HD) and low-dose (LD) ADP agonist for measuring P2Y12-I response and with arachidonic acid (AA) for ASA response. For the WBA, resistance (ohms) was measured with ADP for P2Y12-I response and with HD and LD collagen for ASA response. Whole-blood samples were also analyzed with the VerifyNow PRUTest to assess platelet response to P2Y12-I. Urine samples were analyzed with AspirinWorks. Concordance of antiplatelet response based on predefined cutoff values (eg, concordant = optimal/optimal, discordant = optimal/suboptimal), as well as correlation between actual units of measure, was determined. When comparing P2Y12-I response determined by LTA and WBA, overall concordance was 55% (correlation was r = 0.75 and 0.65 for HD and LD ADP, respectively). VerifyNow was concordant with LTA in 70% (r = 0.86 and 0.75 for HD and LD ADP, respectively) and with WBA in 45% (r = 0.57) of samples. When comparing ASA response between LTA and WBA, overall concordance was 70% (r = 0.09 and 0.19 for HD and LD collagen, respectively). AspirinWorks was concordant with LTA and WBA in 60% of samples (r = 0.32 for LTA; r = 0.08 LD collagen, r = 0.02 for HD collagen on WBA). In summary, concordance varied between 45% and 70% on the four antiplatelet therapy monitoring platforms. Testing of P2Y12 inhibition showed the best correlation between LTA HD ADP and VerifyNow (r = 0.86). When comparing WBA vs LTA, the strongest correlation was between LD ADP LTA and WBA (r = 0.75). Correlation with ASA inhibition was overall poor between the various assays (r ranging between 0.02 and 0.58). The results from this correlation study support the continued use of LTA with HD and LD ADP and AA; other testing methods can be used as adjuncts when LTA proves difficult to interpret.
Limited Utility of Flow Cytometry Immunophenotyping for Assessment of Plasma Cells in Hematopoietic Progenitor Cell Apheresis Product From Patients With Multiple Myeloma
Authors: Cheng Yao , Li Shiyong 
Published: September 2019

Abstract

Aim
Flow cytometric immunophenotyping (FCI) is routinely performed in our laboratory to assess the clonality of plasma cells in hematopoietic progenitor cell apheresis (HPC-A) products as part of the quality control for multiple myeloma patients undergoing autologous stem cell transplantation. The purpose of this project is to investigate whether FCI is indicated for HPC-A when FCI is also performed on a bone marrow biopsy sample obtained before or after HPC-A collection.

Materials and Methods
The FCI results of HPC-A samples were retrieved from the laboratory database and analyzed. Relevant FCI results of the corresponding bone marrow biopsy samples were also retrieved and analyzed. All FCI was performed using BD FACSCalibur/FACSCanto with a four-color antibody panel, and the listmode data were analyzed by BD FACSDiva.

Results
FCI was performed on a total of 1,621 HPC-A samples in our laboratory from 02/01/2012 to 02/02/2018. A total of 58 HPC-A samples were positive for a monoclonal plasma cell population (3.8% of the total sample). Among those positive samples, 55 had bone marrow biopsy done before or after HPC-A collection: 38 within a month, 8 between 1 and 2 months, and 9 between 3 and 6 months. Fifty-four of 55 bone marrow samples were positive for a monoclonal plasma cell population by FCI.

Conclusion
The utility of FCI in the quality assessment of HPC-A products from patients with multiple myeloma is a very limited when FCI is performed on a bone marrow biopsy obtained within 6 months of HPC-A collection.
Widespread Use of High-Dose Ceftriaxone Therapy for Uncomplicated Gonorrhea Without Reported Ceftriaxone Treatment Failure: Results From 5-Year Multicenter-Surveillance Data in China
Authors: Liu Jun , Han Yan , Yin Yueping 
Published: September 2019

Abstract

Background
Antimicrobial resistance (AMR) to N gonorrhoeae has emerged for each of the antibiotics following their introduction into clinical practice recommended as first-line therapies. To improve rational and effective clinical antibiotic treatment, we analyzed the prescription patterns of antibiotics and its therapeutic effect in the treatment of uncomplicated gonorrhea in China.

Methods
We obtained data from a follow-up multicenter surveillance program. Multinomial logistic regression analyses were conducted to explore the associations between demographic/clinical variables with the levels of sensitivity to ceftriaxone and prescription of high-dose ceftriaxone.

Results
In this study, 1,686 patients infected with N gonorrhoeae were recruited in a surveillance network during the period of January 1, 2013, through December 31, 2017, in seven hospitals distributed in five provinces. The prevalence of isolates with decreased susceptibility to ceftriaxone was 9.8% (131/1333), fluctuating between 5.6% and 12.1%. Injectable ceftriaxone was chosen as the first-line treatment among 83.1% patients, and most of them (72.7%, 1,018/1,401) received more than a 1,000-mg dosage. Patients who were infected with gonorrhea or infected with other STDs before (AOR 1.611, 95% CI [1.103-2.352]; AOR 2.329, 95% CI [1.553-3.494]) or who used already antibiotics for this infection (AOR 1.597, 95% CI [1.04-2.452]) were associated with higher prescribed ceftriaxone dosage prescribed. All of the patients recruited in this study were cured regardless of the isolates’ susceptibility to ceftriaxone or the dosage of ceftriaxone they received.

Conclusions
No failure treatment for uncomplicated gonorrhea was reported in China; however, high-dose ceftriaxone was widely used in China, and its impacts need further studies.