247 research outputs found
The Impact of Diversified Income and Agricultural Tax Reform on the Consumption of Chinese Rural Residents
Income from different sources has become an important guarantee to sustain family life and normal expenses in China. How different sources of income affect farmers’ expenditure levels and how they have influenced farmers’ consumption since the agricultural tax reform in China since the 20th century has become a question worth exploring. Panel data from 2016 to 2020 are utilized to examine rural residents’ consumption expenditures and their sources of disposable income by region to analyze the impact of different income sources on farmers’ consumption and the correlation between income before and after agricultural tax reform, and finally conducts an analysis of future scenarios based on a time series model. The research results show that the elasticity of income from different sources on rural households’ per capita consumption expenditure is different, among which wage income is the most elastic, while household business income has a relatively small effect on consumption expenditure, but through data analysis we can find that agricultural tax reform has a significant and continuous promotion effect on rural households’ per capita consumption expenditure. The continuous cycle of agricultural tax reform is long, and the transmission chain through less tax payment, expanded reproduction, harvest, realization, and then consumption is long, thus there is a certain lag in tax reduction effect. Income from such sources in the first three years has a large impact on the current period data, while the first four and five years have a relatively small impact on current business income
Strongly Nonlinear Topological Phases of Cascaded Topoelectrical Circuits
Circuits provide ideal platforms of topological phases and matter, yet the
study of topological circuits in the strongly nonlinear regime, has been
lacking. We propose and experimentally demonstrate strongly nonlinear
topological phases and transitions in one-dimensional electrical circuits
composed of nonlinear capacitors. Nonlinear topological interface modes arise
on domain walls of the circuit lattices, whose topological phases are
controlled by the amplitudes of nonlinear voltage waves. Experimentally
measured topological transition amplitudes are in good agreement with those
derived from nonlinear topological band theory. Our prototype paves the way
towards flexible metamaterials with amplitude-controlled rich topological
phases and is readily extendable to two and three-dimensional systems that
allow novel applications.Comment: accepted by Frontiers of Physics, 18+9 pages, 4+3 figure
Prevalence of polypharmacy and potentially inappropriate medication use in older lung cancer patients: A systematic review and meta-analysis
Objectives: In older lung cancer patients, polypharmacy and the use of potentially inappropriate medications (PIMs) are commonly reported, but no systematic review or meta-analysis has been carried out to ascertain the prevalence and risk variables in this group. This study aimed to identify the prevalence of polypharmacy, PIMs and associated risk variables in older lung cancer patients.Methods: We searched for articles from the beginning to February 2022 in PubMed, Embase, and Web of Science that related the use of PIMs and polypharmacy by older lung cancer patients (PROSPERO Code No: CRD42022311603). Meta-analysis was performed on observational studies describing the prevalence and correlation of polypharmacy or PIMs in older patients with lung cancer.Results: Of the 387 citations, 6 articles involving 16,890 patients were included in the final sample. In older lung cancer patients pooled by meta-analysis, 38% and 35% of PIMs and polypharmacy, respectively. The prevalence of PIMs was 43%, 49%, and 28%, respectively, according to the 2019 AGS Beers criteria, 2014 screening tool for older people’s prescriptions/screening tool for alerting to the proper therapy (STOPP/START criteria) criteria, and other criteria.Conclusion: This systematic review and meta-analysis demonstrated a high prevalence of polypharmacy and PIMs among older lung cancer patients. Therefore, it is essential to take rational interventions for older lung cancer patients to receive reasonable pharmacotherapy.Systematic Review Registration: [https://www.crd.york.ac.uk/PROSPERO/], identifier [CRD42022311603]
Ba6RE2Ti4O17 (RE= Nd, Sm,Gd, Dy-Yb): A family of quasi-two-dimensional triangular lattice magnets
Rare-earth-based triangular-lattice magnets provide the fertile ground to
explore the exotic quantum magnetic state. Herein, we report a new family of
RE-based triangular-lattice magnets Ba6RE2Ti4O17(RE= rare earth ions)
crystallized into the hexagonal structure with space group of P63 mmc, where
magnetic rare earth ions form an ideal triangular lattice within the ab-plane
and stack in an AA -type fashion along the c-axis. The low-temperature magnetic
susceptibility results reveal all the serial compounds have the dominant
antiferromagnetic interactions and an absence of magnetic ordering down to 1.8
K. The magnetization and electron spin resonance results indicate distinct
magnetic anisotropy for the compounds with different RE ions. Moreover,
Ba6Nd2Ti4O17 single crystal is successfully grown and it exhibits strong Ising
like anisotropy with magnetic easy-axis perpendicular to the triangle-lattice
plane, being a candidate to explore quantum spin liquid state with dominant
Ising-type interaction.Comment: 18 pages, 8 figure
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