bluuebunny/crossref_metadata_2025_split huggingface dataset:
Forecasts of CMB lensing reconstruction of AliCPT-1 from the foreground cleaned polarization data
Authors: Han Jiakang , Hu Bin , Ghosh Shamik , Li Siyu , Dou Jiazheng , Delabrouille Jacques , Jin Jing , Li Hong , Liu Yang , Remazeilles Mathieu , Zhao Wen , Zhang Pengjie , Li Zheng-Wei , Liu Cong-Zhan , Zhang Yong-jie , Kuo Chao-Lin , Zhang Xinmin 
Published: April 2023

Abstract
The gravitational lensing distortion of Cosmic microwave background radiation (CMB)
carries fruitful information of cosmic large-scale structure. However, CMB observations are
unavoidably contaminated by emission from various extra-galactic foregrounds, which must be
removed to obtain reliable measurements of the cosmological signal. In this paper, we demonstrate
CMB lensing reconstruction in AliCPT-1 after foreground removal, combine the two bands of AliCPT-1
(90 and 150 GHz) with Planck HFI bands (100, 143, 217 and 353 GHz) and with the WMAP-K band
(23 GHz). In order to balance contamination by instrumental noise and foreground residual bias,
we adopt the Needlet Internal Linear Combination (NILC) method to clean the E-map and the
constrained Internal Linear Combination (cILC) method to clean the B-map. The latter utilizes
additional constraints on average frequency scaling of the dust and synchrotron to remove
foregrounds at the expense of somewhat noisier maps. Assuming 4 modules observing 1 season from
simulation data, the resulting effective residual noise in E- and B-map are roughly 15 μ
K· arcmin and 25 μ K· arcmin, respectively. As a result, the CMB
lensing reconstruction signal-to-noise ratio (SNR) from polarization data is about
SNR≈4.5. This lensing reconstruction capability is comparable to that of other
stage-III small aperture millimeter CMB telescopes.
Axion haloscope signal power from reciprocity
Authors: Egge Jacob 
Published: April 2023

Abstract
Axion haloscopes search for dark matter axions from the galactic halo, most commonly by measuring a power excess sourced by the axion effective current density. Constraining axion parameters from detection or lack thereof requires estimating the expected signal power. Often, this is done by studying the response of the haloscope to a known, but different, source current density, for example via a reflection measurement. However, only in the special case when both sources induce the same electromagnetic fields, do the quantities derived from a reflection measurement adequately describe the setup during an axion measurement. While this might be valid for the traditional resonant cavity haloscope, new broadband or open designs like dish antennas or dielectric haloscopes cannot make this assumption. A more general relation between axion- and reflection-induced fields is needed. In this article, we use the Lorentz reciprocity theorem to derive an expression for the axion signal power which instead of the unmeasurable axion-induced fields depends on the measurable reflection-induced fields. This entirely circumvents the need to know the response of the haloscope to the unknown axion source. It applies to a wide variety of haloscopes including resonant cavities, dielectric haloscopes, and broadband dish antennas.
Uncovering gravitational-wave backgrounds from noises of unknown shape with LISA
Authors: Baghi Quentin , Karnesis Nikolaos , Bayle Jean-Baptiste , Besançon Marc , Inchauspé Henri 
Published: April 2023

Abstract
Detecting stochastic background radiation of cosmological origin is an exciting possibility for current and future gravitational-wave (GW) detectors. However, distinguishing it from other stochastic processes, such as instrumental noise and astrophysical backgrounds, is challenging. It is even more delicate for the space-based GW observatory LISA since it cannot correlate its observations with other detectors, unlike today's terrestrial network. Nonetheless, with multiple measurements across the constellation and high accuracy in the noise level, detection is still possible. In the context of GW background detection, previous studies have assumed that instrumental noise has a known, possibly parameterized, spectral shape. To make our analysis robust against imperfect knowledge of the instrumental noise, we challenge this crucial assumption and assume that the single-link interferometric noises have an arbitrary and unknown spectrum. We investigate possible ways of separating instrumental and GW contributions by using realistic LISA data simulations with time-varying arms and second-generation time-delay interferometry. By fitting a generic spline model to the interferometer noise and a power-law template to the signal, we can detect GW stochastic backgrounds up to energy density levels comparable with fixed-shape models. We also demonstrate that we can probe a region of the GW background parameter space that today's detectors cannot access.
Plasma local diagnostics by polarimetric method
Authors: Oganesyan Koryun B , Dzierżęga Krzysztof , Gevorgyan Ashot H , Hnatic Michal , Kopcansky Peter 
Published: April 2023

Abstract
We study the polarization plane rotation of weak probe signal in the field of strong electromagnetic waves in the presence of an external magnetic field of plasma, the polarization plane stimulated rotation angle of the probe signal in the intense laser field and in plasma is calculated. The estimates of the residual gas local density in a cesium plasma based on the effects of Faraday, Cotton–Mouton and stimulated rotation of the probe signal in the intense laser field have been found. It is shown, that the rotation angle in the cesium plasma medium has a complex structure.
Structural diversity and optoelectronic properties of chemical modification pentagonal quantum dots
Authors: Thao Pham Thi Bich , Hang Nguyen Thi My , Dang Nguyen Hai , Nhat Pham Vu , Tien Nguyen Thanh 
Published: April 2023

Abstract
A first-principle study of the structural diversity and optoelectronic properties of the small penta-graphene quantum dots (PGQDs) has been performed. The stability and optoelectronic properties of the PGQDs are investigated under the effect of chemical modifications. PGQDs are edge functionalized by non-metallic atoms (Si, P, O, F) such as identical edge termination (Si-PGQD, P-PGQD, O-PGQD, F-PGQD) and alternate edge termination (Si-O-PGQD, H-P-PGQD). Further, H-PGQDs are also doped and co-doped with B and P atoms. All studied structures are stable with strong electronic quantization and exhibit semiconducting or metallic properties depending on the termination, doping elements and their site. Absorption peaks in the visible region were not observed for hydrogen passivation PGQDs. However, some absorption peaks appear in this region for edge-passivated. In addition, there are dramatic changes in the electronic properties of B, P, BP-doped PGQDs to give peak shifts to the visible region from the ultraviolet region of the pure sample due to hybridization effects. The enhanced reactivity, controllable electronic properties of edge passivation, and doping make PGQDs ideal for new nanodevice applications.
High-efficiency recovery of 82Se from enriched Zn82Se scintillating bolometer crystals
Authors: Balabanov S.S. , Broerman B. , Dafinei I. , Filofeev S.V. , Laubenstein M. , Nagorny S.S. , Nisi S. , Pagnanini L. , Pirro S. 
Published: April 2023

Abstract
As experiments searching for neutrinoless double beta decay push into the inverted hierarchy, enriched isotope target masses of hundreds of kilograms are required. Due to unavoidable losses throughout the entire production chain, the recovery of expensive enriched material used in crystal-based experiments should be given special attention. The CUPID-0 experiment using Zn82Se scintillating bolomoters provides a unique opportunity at the 10-kg-scale to test a recovery process for enriched 82Se. We present a multi-stage, high-yield method consisting of wet chemistry and vacuum distillation. The chemical purity, isotopic abundance, and radiopurity is demonstrated to be preserved after the 82Se extraction with recovery efficiency no less than 86.4% (that potentially can be higher than 94.7%) and chemical purity of 99.999%.
A method to measure the quenching factor for recoil energy of oxygen in bismuth germanium oxide scintillators
Authors: Ommura Yuga , Ito Hiroshi , Yano Takatomi , Minamino Akihiro , Ishitsuka Masaki 
Published: April 2023

Abstract
Bismuth germanium oxide (Bi4Ge3O12, BGO) scintillation crystals are widely
used as detectors in the fields of particle physics and astrophysics due to their high density,
and thus higher efficiency for gamma-ray detection. Owing to their good chemical stability, they
can be used in any environment. For rare-event searches, such as dark matter and coherent elastic
neutrino-nucleus scattering, BGO crystals are essential to comprehend the response of nuclear
recoil. In this study, we have analyzed the events of neutron elastic scattering with oxygen in
BGO crystals. Then, we have measured the quenching factor for oxygen recoil energy in the BGO
crystal as a function of recoil energy by using a monoenergetic neutron source.
Recent advancement in water quality indicators for eutrophication in global freshwater lakes
Authors: Suresh Keerthana , Tang Ting , van Vliet Michelle T H , Bierkens Marc F P , Strokal Maryna , Sorger-Domenigg Florian , Wada Yoshihide 
Published: April 2023

Abstract
Eutrophication is a major global concern in lakes, caused by excessive nutrient loadings (nitrogen and phosphorus) from human activities and likely exacerbated by climate change. Present use of indicators to monitor and assess lake eutrophication is restricted to water quality constituents (e.g. total phosphorus, total nitrogen) and does not necessarily represent global environmental changes and the anthropogenic influences within the lake’s drainage basin. Nutrients interact in multiple ways with climate, basin conditions (e.g. socio-economic development, point-source, diffuse source pollutants), and lake systems. It is therefore essential to account for complex feedback mechanisms and non-linear interactions that exist between nutrients and lake ecosystems in eutrophication assessments. However, the lack of a set of water quality indicators that represent a holistic understanding of lake eutrophication challenges such assessments, in addition to the limited water quality monitoring data available. In this review, we synthesize the main indicators of eutrophication for global freshwater lake basins that not only include the water quality constituents but also the sources, biogeochemical pathways and responses of nutrient emissions. We develop a new causal network (i.e. multiple links of indicators) using the DPSIR (drivers-pressure-state-impact-response) framework that highlights complex interrelationships among the indicators and provides a holistic perspective of eutrophication dynamics in freshwater lake basins. We further review the 30 key indicators of drivers and pressures using seven cross-cutting themes: (i) hydro-climatology, (ii) socio-economy, (iii) land use, (iv) lake characteristics, (v) crop farming and livestock, (vi) hydrology and water management, and (vii) fishing and aquaculture. This study indicates a need for more comprehensive indicators that represent the complex mechanisms of eutrophication in lake systems, to guide the global expansion of water quality monitoring networks, and support integrated assessments to manage eutrophication. Finally, the indicators proposed in this study can be used by managers and decision-makers to monitor water quality and set realistic targets for sustainable water quality management to achieve clean water for all, in line with Sustainable Development Goal 6.
Research on deep utilization technology of flue gas residual heat for large-capacity coal-fired units
Authors: Li Mingcheng , Li Guipeng , Lu Xizhen , Zhang Mingzhao 
Published: April 2023

Abstract
The utilization of flue gas waste heat is an important measure to improve the power efficiency of coal-fired units. Traditional method is to arrange the heating surface after the air preheater, which can just recover the low-grade heat, low efficiency. For the engineering practice of a 1000MW double-reheat unit, three feasible schemes are proposed, namely scheme 1 “two-stage gas cooler plus cold air heater”, scheme 2 “air preheater bypass + two-stage flue gas cooler plus cold air heating” and scheme 3 “air preheater bypass + hot primary air temperature adjustment plus two-stage flue gas cooler plus cold air heater”. For the sake of evaluating the actual effects of different schemes objectively, the thermal characteristic calculation model of the four-part rotary air preheater was established by finite difference method, and then the effect of the inlet air temperature and the share of bypass flue gas on the thermal efficiency of the boiler were studied. The equivalent enthalpy drop method was used to establish the thermal characteristic model of steam turbine, and the influence of different heat distribution modes on the heat consumption rate of steam turbine was studied.. Considering the technical economy, the optimal bypass flue gas share of this scheme is 12%, which corresponds to the reduction of coal consumption for power supply of the unit by about 3.23g/kWh. Taking into account comprehensively, scheme 3 is recommended.
Research on the effect of the flue gas recirculation on the combustion and operating economy of circulating fluidized bed boiler
Authors: Xie Guowei , Gu Congyang , Cao Peiqing , Zhang Peng , Duan Shoubao , She Jiangang , Liu Xiaoping , Xin Shengwei , Guo Rui , Du Jiajun , Wang Hu , Han Xinjian 
Published: April 2023

Abstract
To meet the requirements of the power grid’s deep peak shaving, a 300MW CFB boiler in a power plant transformed the flue gas recirculation. After the transformation, it is found that after putting into the flue gas recirculation, the main parameters of the boiler such as environmental protection emission value, the boiler operating bed temperature, and the inlet temperature of the separator had changed. To analyze the changes, this paper was carried out by related thermal state tests during the start-up or the normal operation of the boiler. The operating data of the boiler was collected before and after putting into the flue gas recirculation, and the influence of the gas recirculation on the main parameters and economic indicators of the boiler is quantitatively analyzed and discussed. The result shows that the technology of the flue gas recirculation can reduce the oxygen content in the dense phase area of the furnace and increases the reducing gas atmosphere to reduce the generation of NOX emission during the start-up or in the normal operation of the boiler. This provides a technical reference that optimizes the operation mode of the flue gas recirculation during the deep peak shaving in the CFB boiler.
Dynamic positioning filter design applied on the small ship
Authors: Wang Feng , Lv Jingze , Yue Rongqin , Lu Jie , Liu Yaqi 
Published: April 2023

Abstract
This paper investigates a filter design method for dynamic positioning control system based on the wave peak frequency tracking algorithm. The wave peak frequency varies randomly with the sea condition, ship speed, wave direction and other factors. The performance of the filter is greatly affected by the real-time recognition of the wave peak frequency. The wave disturbance model is indicated as an autoregressive moving average (ARMA) model and the recursive extended least squares (RELS) algorithm is proposed to identify the wave peak frequency with the auxiliary model idea. A filter with the wave peak frequency tracker is constructed to evaluate the effectiveness of the proposed filter. Ultimately, simulation results show that the proposed filter can effectively track the wave peak frequency and can still effectively reduce the influence of waves on the ship control system when the peak frequency changes.
Study on probabilistic safety assessment in decommissioning of nuclear power plant
Authors: Wang Handing , Liang Xiaoyu 
Published: April 2023

Abstract
The decommissioning of Nuclear power plant involves many activities different from the normal operation stage of Nuclear power plant. In the process of decommissioning, there are many new safety problems, which usually require new safety evaluation. The safety management of decommissioning runs through the whole decommissioning stage until the decommissioning of the plant site is completed. The management level depends on the risk level of each stage of decommissioning, especially the decommissioning process of high radioactivity in nuclear power plant, so it is necessary to pay attention to the risk of different stages of decommissioning and improve the decommissioning safety management. At present, probabilistic safety assessment method has become an effective tool to support and supplement deterministic safety assessment, and is used in regulatory activities. The safety risk analysis of nuclear power plant in the decommissioning stage in China is in the initial stage, with little experience. Therefore, it is necessary to study the corresponding technical methods and risk management applications. This paper study on the probabilistic safety assessment in the decommissioning of nuclear power plant, including its scope of application, risk-informed assessment method and safety management application. The probabilistic safety assessment of decommissioning of nuclear power plant is an effective means to evaluate the potential risks related to decommissioning activities and their possible consequences. This method can be used for safety review and safety management in the decommissioning stage of nuclear power plant.
Study on fuel cold energy utilization of large ammonia powered ship
Authors: Zhang Gang , Liu Zhu , Zhang Xiaorong , Yang Yongjian 
Published: April 2023

Abstract
Taking large ammonia powered container ship as the research object, a set of liquid ammonia cold energy cascade comprehensive utilization system is designed. The system mainly includes low temperature cargo hold system, high temperature cargo hold system and marine air conditioning system. Aspen HYSYS software is used to simulate the system scheme. Based on the utilization rate of cold energy in the low temperature cargo hold system, the maximum of liquid ammonia flow fraction under different operating conditions was determined, and the cold energy utilization system exergy efficiency was calculated. In the 75% working condition of the ship, when the flow fraction was 40%, the whole cold energy utilization system exergy efficiency was 34.42%, in this way, the effective utilization of liquid ammonia cold energy is realized.
Implementation of ocean element curves and profiles on GIS
Authors: Zhang Zengjian , Xu Shanshan , Geng Shanshan , Wang Kaiyue , Chen Fei , Ning Pengfei 
Published: April 2023

Abstract
This paper introduces the realization algorithm of ocean element curves and profiles on GIS. The algorithm projects the curves and profiles of ocean elements onto the geographic map. It realizes the combination of two-dimensional spatial geographic location, time dimension of curve change and spatial dimension of vertical profile, and displays three-dimensional information on a two-dimensional plane map. It can well express the actual survey data, statistical analysis data, and realize the comprehensive visualization of marine elements. The algorithm is useful in the visualization of ocean data. The algorithm has good application prospects in the visualization display of marine data, quality control of survey data, joint analysis of different elements or disciplines, and scientific research.
Measurement of the travel time in the upper Yellow River in 2015
Authors: Sun Zhaodong , Zhang Yatong , Song Zhangyang , Sun Hong , Sun Yigong 
Published: April 2023

Abstract
The solute travel time in steady and gradually varied flow in rivers is necessary for waste transport studies, in particular, to evaluate the behavior of accidentally spilled soluble substances in streams. This study conducted two dye tests on the Donghe reach within Baotou in the upper Yellow River to measure the travel times in October 2015. It reconstructed the leading and trailing edge missed data by extension from time-concentration curves developed by fitting a three-parameter log-normal (3PLN) equation to the discretely observed data. It also calculated the travel times, dispersion rates, and longitudinal dispersion coefficients. The results show that the calculated travel rates of the centroid are less than the velocities at the Baotou hydrometric station. The calculated longitudinal dispersion rates ranged from about 0.22 meters per second to 0.68 meters per second. Using the nonlinear best fit method, a dispersion model for an instantaneous injection of tracer gave the longitudinal dispersion coefficients ranging from about 76 square meters per second to about 304 square meters per second. However, the ones generated by some commonly used empirical equations are at least 2.6 times them. Tracing tests are essential to obtain helpful information for pollutant transport studies.
Sulfur and phosphorus co-doped hard carbon for potassium ion storage
Authors: Chi Chunlei , Liu Zheng , Fan Zhuangjun 
Published: April 2023

Abstract
Due to the low cost, good chemical stability and structural diversity, hard carbon has been considered as an important anode material for potassium-ion batteries (PIBs). However, due to the large diameter of K+, PIBs with both excellent rate performance and long-life is still challenging. Herein, sulfur (S), phosphorus (P) co-doped hard carbon anode are synthesized via polymerization of thiophene and phytic acid and the following concise pyrolysis strategy. S in hard carbon can used as reactive sites for K+ storage and P doping will effectively improve wettability of electrolyte. After temperature regulation, the fabricated SP-700 with dual and abundant heteroatom doping exhibits high initial reversible capacity (412 mAh g−1 at 0.05 A g−1), excellent rate performance (130 mAh g−1 at 5 A g−1) and stable cyclic performance (94 mAh g−1 after 1500 cycles at 2 A g−1).
Overview of ecology and automation status of pig breeding
Authors: Li Yumei , Xiao Jixue , Meng Yawei , You Jia 
Published: April 2023

Abstract
The mass production of pigs will affect the ecological environment around the pig farm. It requires hard work and a lot of manpower and material resources. This paper investigates the ecological environment status of pig manure cleaning and treatment, antibiotic and nitrogen and phosphorus treatment in manure, and gas pollution treatment in pig farms. The development of pig house environmental monitoring and pig farm feeding automation is reviewed. It is pointed out that the research on the cleaning and disposal methods of pig excretion pollutants, the integration of these methods, and the automation and intelligence of pig breeding will become the main research trend of pig breeding.