bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fully decoupled fixed-time cascade control of three-phase voltage source converters with LC output filter
Authors: Ghazzali Mohamed , Haloua Mohamed , Giri Fouad 
Published: July 2020

Abstract
This paper presents a fully decoupled fixed-time cascade control system of three-phase voltage source converters (VSCs) with LC output filter. The proposed controller has a cascade structure and it is designed in the synchronous reference frame d-q. The outer loop is for voltage control and the inner loop is for current control. A fixed-time controller is developed for voltage regulation and reference tracking before the desired pre-fixed time despite the unknown disturbances. The current controller uses PI controllers for current regulation and feedforward terms to decouple the direct and quadrature of voltage and current control loops. Unlike the conventional PI-based synchronous reference frame VSC control, the proposed approach provides better control performance with smaller and smoother control signal and enables the d-q components of voltage and current to be fully decoupled. A comparative simulation study with the conventional control system is provided to highlight the effectiveness of the proposed approach.
Power Quality Analysis on Arc Furnace Capacitor Bank System in Thailand
Authors: Sreewirote Bancha , Ngaopitakkul Atthapol 
Published: July 2020

Abstract
A large arc furnace plant is currently in operation in Thailand has utilize a capacitor bank system to compensate for the reactive power. However, the use of a capacitor bank, the power quality has become a problem in terms of the harmonic current owing to the switching transient that magnifies the current harmonics and causes severe damage to the capacitor bank and other nearby sensitive equipment. In this study, we investigate the power quality issue in terms of harmonics in a steel furnace factory, and its effect when switching the capacitor bank into a system. We perform the study by using data from an arc furnace plant in Phetchaburi province, Thailand for a case study. The results obtained from the power quality measurement after installing a detuning reactor are satisfactory with a significant decrease in the harmonic current. Thus, the proposed approach can be applied to an arc furnace plant in order to ensure the safety and reliability of the plant.
Application of Thermal Pressure Ventilation Technology in Extra Long Construction Tunnel with High Ground Temperature
Authors: Xie Z W , Xiao Y M 
Published: July 2020

Abstract
The feasibility of thermal pressure ventilation technology for ventilation and cooling of extra long construction tunnel with high altitude and high ground temperature was discussed. A physical model was built with a proportional factor of 1:1 based on the design documents of Zilashan tunnel in China. The CFD model considering buoyancy effects was used to evaluated the influence of the initial rock temperature, the insulation performance of the left tunnel and the outdoor air temperature on the effect of thermal pressure ventilation. Results show that the effect of thermal pressure ventilation increases by 12.2%, and the effect of cooling enhances by 3.7% when the left tunnel has no insulation. Compared with the initial rock temperature, the outdoor air temperature has a greater influence on thermal pressure ventilation. When the initial rock temperature is below 54 °C, outdoor air temperature is below 17.5 °C and the left tunnel has no insulation, thermal pressure ventilation technology is feasible for ventilation and cooling of Zilashan tunnel with a shaft of 450 m height. The thermal pressure ventilation technology provides a reference for other construction tunnel projects as a design of ventilation and cooling.
Highly Efficient Use Technology of The By-Product Gas in Iron and Steel Making Process
Authors: Song Hanlin , Zhang Jinpeng , Xue Xiangxin 
Published: July 2020

Abstract
BOF gas, with an annual output of more than 100 billion standard cubic meters, is one of the primary by-product energy resources in the steelmaking process. However, the up to 34.7% abandoned rate of BOF gas in China has caused a lot of carbon emissions and energy resources waste. The abandoned BOF gas, with a high temperature of 1773∼1873K and 20∼40%(vol.%) CO and 20∼30%(vol.%) CO2 has a vast physical sensible heat and chemical latent heat. There are predictable recyclable values and comprehensive utilization prospects to achieve the ultra-low carbon emissions and energy conversion in ironmaking and steelmaking. The paper has carried out a detailed calculation of the energy value of abandoned BOF gas, and the feasibility analysis and program design of the overall resource recycling and energy utilization in ironmaking and steelmaking, including blast furnace smelting of vanadia-titania magnetite, combined blowing in BOF and vanadium-extracting converter, co-production of steel-chemicals industry.
Light scattering from periodic arrays of noble-metal disks
Authors: Ji Xiaowei , Zhou Yu 
Published: July 2020

Abstract
Numerical solution is presented for light scattering from free-standing periodic arrays of disks made of noble-metal. Using the generalized boundary conditions of the surface impedance type, we formulate the boundary value problem into a set of integral equations for unknown electric and magnetic current densities defined over the circular area. Employment of the method of moments allows us to solve the integral equations and give the expansion coefficients of the current densities, from which we can find reflected, transmitted, and absorbed powers. Dependence of the powers on the array parameters and wavelength is discussed in detail from the viewpoint of grating resonance.
Preparation and microstructure of Pb0.99Nb0.02((Zr0.52Sn0.48)0.955Ti0.045)0.98O3 ceramics
Authors: Li Min 
Published: July 2020

Abstract
The Pb0.99Nb0.02((Zr0.52Sn0.48)0.955Ti0.045)0.98O3 antiferroelectric ceramics were synthesized by two different preparing routes (molten salt method and conventional solid state method). It was found that the sample synthesizes by a solid state method which owns smaller grain size leading to a higher energy storage density of 1.3 J/cm3. From the S-E loops, it was found that the sample prepared by a molten salt method owns less micro-cracks and larger grain size which induced a higher switchable polarization and strain. From the results of situ TEM, the existence of 90 ° domain indicates the existence of antiferroelectric phase.
Dynamic Change and Influence Factor Analysis of Vegetation Community of West Liaohe River Plain
Authors: Yan Long , Wang Yong , Deng Wei , Li Dili 
Published: July 2020

Abstract
With intensive mining of groundwater and expansion of irrigation area, reversion has happened to the grassland and arable area of West Liaohe River Plain, and the natural property of ecological system has declined sharply. Through historical literature research and plant sampling survey, comparison was made for the status dynamic change of grassland vegetation community on the West Liaohe River Plain before (1980) and after interference (2016). According to the result, it showed that the grassland vegetation species diversity of West Liaohe River Plain dropped from 917 to 258. Besides, the influence factors affecting vegetation community change were also analyzed, 1) the grassland was occupied by arable land, thus resulting in a shrink in grassland area from 48, 900 km2 in 1980 to 22, 400 km2 in 2016. Due to the locality in species distribution, therefore, the shrinking process of grassland also represented the process of species disappearance; 2) large-scale well irrigation resulted in the overall decrease of underground water level and the vegetation ecological degradation; 3) overgrazing and other problems brought by rapid development of animal husbandry.
A Study of the Impact of Atmospheric Pressure in Eastern Qilian Mountains on Vertical Deformation at GNSS Stations
Authors: Yang Guolin , Sun Xuexian , Liu Tao , An Xuwei , Zhang Bo 
Published: July 2020

Abstract
The change of the earth’s surface environmental load is an important factor that causes the crustal short-term movement. The project address is in the eastern part of Qilian Mountain, and we take the crustal vertical deformation and gravity changes affected by load changes as the research object. Based on the crustal load deformation theory, we use the data of GNSS continuous reference stations and meteorological stations in the region to study the evolution between atmospheric load changes and vertical crustal movement in the region from 2012 to 2017. The results show that the atmosphere in the eastern part of the Qilian Mountains is affected by atmospheric load periodically and varies with the seasons. On average, atmospheric pressure is low in summer and high in winter, resulting in annual periodic crustal vertical deformation, while the crustal uplifts in summer and declines in winter. The crustal deformation in most areas is the largest around January and August, and there are certain differences in crustal deformation in different areas.
Characteristics of Dissolved Organic Matter in Tail Water of Wastewater Treatment Plant and its Influence on Receiving River
Authors: Yuan Xingcheng , Li Dan , Chen Yangwen , Liu Rui 
Published: July 2020

Abstract
The dissolved organic matter (DOM) in the tail water of the municipal wastewater treatment plant (WWTP) are complex and changeable, and can react with the organic and metal ions in the receiving water, thus affecting their migration and transformation. In order to understand the characteristics of DOM in the tail water of WWTP, the Guozhen WWTP and Kui river in Xuzhou city were taken as the research objects. The spectral characteristics of DOM were analysed by three dimensional fluorescence spectroscopy (3D-EEM), and the water quality indexes such as pH, total nitrogen (TN), ammonia nitrogen (NH3
−-N), nitrate nitrogen(NO3
−-N), nitrite nitrogen(NO2
−-N), TOC and UV254 were measured. The changing rules of these indexes in sewage, tail water and receiving river were discussed. The results showed that DOM in the tail water was mainly composed of soluble microbial metabolites and humic acids. The TN, NH3-N, NO3
−-N, NO2
−-N and TOC have been significantly reduced under the biological treatment process of the WWTP, but the large-scale drainage of the tail water will still have no negligible influence on the natural waterbody.
Application of magnetic superacid catalyst in synthesis of 2-methylanthraquinone
Authors: Li Xiang , Yang Rui , Wang Detang , Li Gan , Zhao Meixia 
Published: July 2020

Abstract
A solid acid catalyst was prepared by impregnating trifluoromethanesulfonic acid (TFMSA) onto mesoporous SiO2 coated attapulgite (ATP). 2-(4’ -methyl benzoyl) benzoic acid (T acid) was used as a compound to evaluate the catalytic activity. T acid is an important dye intermediate. The results show that T acid conversion over the catalyst could reach 100% under mild conditions without concentrated sulfuric acid. It proved that the catalyst was stable after 4 cycles. According to multiple analyses, TFMSA was formed on the surface of ATP.
Biochar produced from cotton husks and its application for the adsorption of oil products
Authors: Yang Mouyuan , Wang Jiaqi , Chen Yan , Gao Junkai 
Published: July 2020

Abstract
Due to their low-cost, light weight, environmental protection, biological carbon as the oil adsorbent has aroused widely attention. The discovery and research of novel biological carbon for the separation of oil from water is still required urgently. In this work, the cotton husks were prepared through high-temperature pyrolysis and they are utilized to adsorb different oils. The adsorption process and reusability were also investigated, it founded that the carbonized cotton husks (CNH) exhibit fast adsorption capacity and excellent sorption capacity and reusability, which can be the great candidate for oil spill cleanup application.
Lead exposure characteristics and pollution evaluation of indoor and outdoor dust in primary school campuses of Baoji city in northwest China
Authors: Li Zixia , Lu Hai , Zhoug Fang 
Published: July 2020

Abstract
Lead in dust is an important potential source of human exposure to lead. The indoor and outdoor dust in the urban and rural areas of Baoji City, a typical industrial city of northwest China, including the urban, suburban towns, rural and lead-zinc smelters, was collected. The Pb content of the dust was analyzed by ICP-MS after microwave digestion. The results reveal that the lead content was 627.18 mg/kg and 679.39 mg/kg in indoor and outdoor school of the city center area, respectively. The average content of lead was 593.61 mg/kg and 635.46 mg/kg in indoor and outdoor school of the urban area, respectively. The lead content in the rural area was lower than city center area and the urban area, the results were 217.33 mg/kg and 268.57 mg/kg. The lead content in lead and zinc smelters area was highest than other area, the results were reached 2717.62 mg/kg and 3296.27 mg/kg. Pb pollution level and potential ecological risk in Baoji City had reached a serious level based on two kinds of evaluation methods. The results are expected to provide important scientific basis for regional environmental protection, environmental pollution controlling, management and health protection of Baoji city.
Study on Adsorption and Photocatalytic Properties of Rectorite-titanium Dioxide-Ag Composites
Authors: Du Yuanyuan , Fu Ying , Zheng Linlin , Gao Xing , He Wen , Han Li , Zheng Pengwu 
Published: July 2020

Abstract
Using butyl titanate, silver nitrate, tired rectorite (REC) as raw materials, titanium dioxide (TiO2) and silver (Ag) were loaded onto the octahedron structure of the tired rectorite by Sol-Gel method, and REC- TiO2 and REC- TiO2 -Ag Composites were successfully prepared. The Photocatalytic properties and adsorption properties were also studied. The results showed that the adsorption rate of REC-TiO2-Ag to methylene blue was higher than that of REC- TiO2. In the same proportion of REC- TiO2 -Ag and REC-TiO2 Composites, REC-TiO2-Ag composites have better adsorption effect on methylene blue, and the balanced adsorption of REC-TiO2-Ag composites at 25°C is 54.054 mg/g. The equilibrium adsorption amount of REC-TiO2 composites is 36.49 mg/g. At the same time, the photocatalytic degradation rate of REC- TiO2 -Ag to methylene blue was 96%, which was significantly higher than that of REC-TiO2.
Research on energy conservation of port public buildings
Authors: Ying Haining , Lu Huiyu , Ren Jie , Li Kang , Chen Jing 
Published: July 2020

Abstract
Energy is the basis of the survival and development of human society, and the energy needed is increasing. Our building energy consumption accounts for a large proportion of total social energy consumption, so the research and development of building energy-saving technology is the top priority. The energy conservation and emission reduction of port public buildings should also be paid attention to. Domestic and foreign scholars’ research on port energy conservation mainly focus on the management and planning of port construction, less on the specific energy conservation measures of port public buildings, staying at a relatively macro and overall level, and lack of detailed research on the function positioning, site selection and layout, and structural form of port public buildings.
Combustion Performance and Kinetic Analysis of Shenhua Raw Coal Mixed Coal Gasification Slag
Authors: Wang Yunfei , Zhang Fushen , Zheng Zhilei , Wang Huiqi , wang Feng 
Published: July 2020

Abstract
In this paper, Shenhua coal and its gasification slag (GS) in Ordos are taken as the research objects. The thermogrmetric analyzer is used to investigate the mixed combustion characteristics of different proportions. The experimental results show that Shenhua raw coal mixed with GS can improve the overall ignition and burnout characteristics of mixed coal to some extent. With the increase of the mixing amount of GS, the combustion characteristic temperature of coal samples presents an overall trend of increase in ignition point temperature (T
i) and burnout temperature (T
b). When the GS content is 50%, the maximum weight loss temperature (T
max) is the highest. The mixing amount of GS is not equal to the change of sample mass. The comprehensive combustion characteristic S decreases with the increase of GS content.When the mixing amount of GS was 50%, the minimum apparent activation energy obtained was 87.11kJ/mol.
Analysis of the Urban Renewal Strategies with Fuzzy Delphi Approach
Authors: Liu Shih-Yuan , Wu Pao-Kuan 
Published: July 2020

Abstract
Currently, the old houses more than 30 years are exceed 4.5 million in Taiwan. If it does not accelerate urban renewal and reconstruction, it will reach 6.4 million in ten years. “Urban renewal is not a goal, it is a tool”. J. Q. Wilson mentioned it by his book named Urban Renewal in 1996. Since 2007, government promote renewal works energetically by the means of additional building bulk and tax reduce to achieve the fallowing goal: promote a well-planned urban land redevelopment, revitalize urban functions, improve urban living environments, and to increase public interest. In addition, the inability to implement various supporting measures have made urban renewal very difficult. In particular, urban renewal adopt the “Joint Construction Agreement”. Consequently, this study proceeds to explore the main factors that affect urban renewal for joint construction agreement. Through the evaluation model and expert groups giving fuzzy values, access the relative importance of each factors by using Fuzzy Delphi method. The study found the critical factor and propose strategies for urban renewal development in the future to improve the quality and quantity of urban renewal.
Probing criticality in quantum spin chains with neural networks
Authors: Berezutskii A , Beketov M , Yudin D , Zimborás Z , Biamonte J D 
Published: July 2020

Abstract
The numerical emulation of quantum systems often requires an exponential number of degrees of freedom which translates to a computational bottleneck. Methods of machine learning have been used in adjacent fields for effective feature extraction and dimensionality reduction of high-dimensional datasets. Recent studies have revealed that neural networks are further suitable for the determination of macroscopic phases of matter and associated phase transitions as well as efficient quantum state representation. In this work, we address quantum phase transitions in quantum spin chains, namely the transverse field Ising chain and the anisotropic XY chain, and show that even neural networks with no hidden layers can be effectively trained to distinguish between magnetically ordered and disordered phases. Our neural network acts to predict the corresponding crossovers finite-size systems undergo. Our results extend to a wide class of interacting quantum many-body systems and illustrate the wide applicability of neural networks to many-body quantum physics.
Strengths in numbers: Assessing the use of StrengthsFinder 2.0 in a pharmacy residency program
Authors: Faville Elizabeth , Turner Suzanne , Armitstead John A 
Published: July 2020

Abstract

Purpose
To quantify the trends of StrengthsFinder 2.0 domains and traits in pharmacy residents within a single residency program. To recognize and discuss the application of resident StrengthsFinder 2.0 traits within a residency program.

Methods
This is a retrospective review of StrengthsFinder 2.0 domains and traits among first- and second-year postgraduate year (PGY) pharmacy residents over the past 6 years in a community-based health system. Perspectives on the utility of the StrengthsFinder 2.0 assessment within a residency program, from the viewpoints of a residency program director, a system director of pharmacy, and a current resident, were also obtained and recorded.

Results
A total of 34 residents with 170 StrengthsFinder 2.0 traits were included in this data analysis. The top StrengthsFinder 2.0 domains of all pharmacy residents were Strategic Thinking and Relationship Building, being exhibited by 36% and 28%, respectively. Learner, Achiever, Harmony, Input, and Restorative were found to be the most frequently reported StrengthsFinder 2.0 traits among all pharmacy residents examined. Learner and Harmony were found to be the top traits of first-year pharmacy residents (11% and 9%), while Achiever and Learner were the most common traits found in the second-year pharmacy residents (13% and 10%). The system pharmacy director, residency program director, and current resident agreed that the assessment tool enhances the resident experience. However, each has their own perspective on the benefits of the StrengthsFinder assessment with respect to the residency program.

Conclusion
Overall, the top 5 StrengthsFinder 2.0 traits seen in pharmacy residents who have completed a PGY1 or PGY2 residency at Lee Health were: Learner (18%), Achiever (9%), Harmony (7%), Input (6%), and Restorative (6%). Achiever, Harmony, Learner, Input, and Restorative were found to be the most common traits across all categories reported. These trends are similar to those reported in previous studies of StrengthsFinder 2.0 assessment of pharmacy students and residents. Evaluating individual StrengthsFinder 2.0 traits at the start of the residency year provides a framework for each resident to complete ongoing self-evaluations. In addition, familiarity with the common traits seen within residents allows residency leadership members to make more thoughtful decisions regarding resident assignments for learning experiences or committee appointments.
Primary care pharmacy technicians: Effect on pharmacist workload and patient access to clinical pharmacy services
Authors: Walker Dmitry , Hartkopf Katherine J , Hager David R 
Published: July 2020

Abstract

Purpose
Improve patient access to clinical pharmacy services and decrease pharmacist technical task workload in primary care (PC) clinics.

Summary
Due to concerns with the amount of technical tasks performed by University of Wisconsin Health PC clinical pharmacists negatively impacting their capacity to care for patients and perform clinical tasks, the pharmacy department piloted a new PC pharmacy technician role that involved completion of technical tasks previously performed by PC pharmacists. PC pharmacist daily technical and clinical activities were identified through shadowing and quantified by a 4-week period of work sampling. A PC pharmacist workgroup determined the technical tasks that would be appropriate for a pharmacy technician to complete and developed the technician workflows. A PC pharmacy technician was implemented during a 3-week pilot, when pharmacist daily technical and clinical activities were quantified through work sampling. Following implementation, a 52.7% (P &lt; 0.001) relative reduction and a 10.2% (P &lt; 0.001) relative increase in pharmacist technical and clinical activities, respectively, were identified. Additionally, a 10% relative increase from the previous 3-month average was observed in the PC pharmacist rolling patient panel size during the pilot period, correlating with an increase of patient access to pharmacist clinical services.

Conclusion
Up to 17% of PC pharmacist daily activities are technical tasks. Leveraging pharmacy technicians to support pharmacists with completion of these tasks increases patient access to clinical pharmacy services but requires additional staff resources.