421 research outputs found
sj-docx-1-eso-10.1177_23969873231223062 – Supplemental material for Certification of stroke centers at primary hospitals and the improvement of thrombolysis n South China during 2020–2022
No full textSupplemental material, sj-docx-1-eso-10.1177_23969873231223062 for Certification of stroke centers at primary hospitals and the improvement of thrombolysis n South China during 2020–2022 by Yicong Chen, Qingfeng Lei, Jiaoxing Li, Jianle Li, Yinxin He, Jingjing Li, Shihui Xing, Yuhua Fan and Jinsheng Zeng in European Stroke Journal</p
Multiferroic CoFe2O4-BiFeO3 core-shell nanofibers and their nanoscale magnetoelectric coupling
No full textMultiferroic CoFe2O4-BiFeO3 (CFO-BFO) core-shell nanofibers were synthesized by coaxial electrospinning. The spinel structure of CFO and perovskite structure of BFO were confirmed by x-ray diffraction and high-resolution transmission electron microscopy. The core-shell configuration of nanofibers was verified by scanning electron microscopy and transmission electron microscopy images. The macroscopic ferromagnetic property of core-shell nanofibers was demonstrated by magnetic hysteresis loop. The local magnetoelectric (ME) coupling was confirmed by using dual frequency piezoresponse force microscopy (PFM) under an external magnetic field, showing magnetically induced evolution of piezoresponse and domain structure. The ferroelectric characteristics are demonstrated by the switching spectroscopy PFM. From PFM hysteresis and butterfly loops, it is observed that the piezoresponse amplitude is reduced while coercive voltage increased under external in-plane magnetic field, induced through the mechanical interactions between magnetostrictive CFO and piezoelectric BFO, from which the lateral ME coupling can be estimated quantitatively. The nanofibers thus can find a variety of applications as a one-dimensional multiferroic material
Alluvial Fan Scree Deposits: Formation Characteristics and Erosion Mitigation Strategies
No full textAlluvial fan scree deposits (AFSDs) in arid/semi-arid regions are highly susceptible to rainfall-induced erosion, posing significant risks to infrastructure like oil pipelines. This study evaluates the efficacy of SH polymer materials in enhancing AFSD erosion resistance through three experimental approaches: film characterization, rainfall erosion simulation, and environmental compatibility assessment. Tensile tests demonstrated that SH polymer films (0.16–0.56 mm thick) retained >80% mass after prolonged immersion, exhibiting prolonged ductility (250 mm elongation) and stable post-immersion softening, ideal for enduring cyclic erosion. Rainfall simulations (200 mm/h intensity) revealed that SH application rates ≥ 1.5 kg/m2 reduced soil loss by >90%, with 2.0 kg/m2 ensuring near-complete slope integrity across planar/curved morphologies. Ecological tests confirmed SH’s environmental friendliness, as treated soils supported robust tall fescue growth without permeability inhibition. The findings advocate SH polymers as a sustainable solution for AFSD stabilization, combining mechanical resilience, terrain adaptability, and eco-compatibility
Nash equilibrium based semantic cache in mobile sensor grid database systems
No full textMobile applications are being increasingly deployed on a massive scale in various mobile sensor grid database systems. With limited resources from the mobile devices, how to process the huge number of queries from mobile users with distributed sensor grid databases becomes a critical problem for such mobile systems. While the fundamental semantic cache technique has been investigated for query optimization in sensor grid database systems, the problem is still difficult due to the fact that more realistic multi-dimensional constraints have not been considered in existing methods. To solve the problem, a new semantic cache scheme is presented in this paper for location-dependent data queries in distributed sensor grid database systems. It considers multi-dimensional constraints or factors in a unified cost model architecture, determines the parameters of the cost model in the scheme by using the concept of Nash equilibrium from game theory, and makes semantic cache decisions from the established cost model. The scenarios of three factors of semantic, time and locations are investigated as special cases, which improve existing methods. Experiments are conducted to demonstrate the semantic cache scheme presented in this paper for distributed sensor grid database systems
“JUSTICE” In Architecture
No full textThe Degree Book is a comprehensive account of the author’s academic journey in pursuing the Master of Science in Advanced Architectural Design (M.S. AAD) - Architecture and Representation at Cornell University. The book encompasses various aspects of the author’s academic work, including design projects, research, elective courses, and architectural theory.During the author’s studies, a significant realization was the importance of designing architecture with the objective of helping residents, communities, and the environment. This realization led to a deeper understanding of the concept of “justice” in architecture. The author identifies sustainable design as a prime example of “environmental justice” and acknowledges that architecture has the potential to create causal relationships between space or technology and various forms of “justice”. The book discusses the author’s design projects, and how they are inspired by the concept of “justice” in architecture. The author revisits the projects to evaluate how the author created a causal relationship between space, technology, and “justice”. The author also examines how “justice” has affected the author’s design thinking. The Degree Book also includes a discussion of emerging technologies, digital and generative design, new drawing and media space, and their impact on the field of architecture. The author acknowledges the importance of understanding these emerging technologies to better express and display research results. In conclusion, the author posits that architecture in the new era should focus on realizing various social, cultural, racial, and environmental design concepts of “justice”. The author recognizes that architects have a responsibility to design for the betterment of society and that architecture can play a crucial role in creating a just and equitable world. The Degree Book is an insightful and inspiring account of the author’s academic journey
TRPC6 Up-Regulation in Ang II-Induced Podocyte Apoptosis Might Result from ERK Activation and NF-kappa B Translocation
No full textAngiotensin II (Ang II) has been recognized as an apoptosis inducer in podocytes, but the mechanism of apoptosis induced by Ang II is unclear. Transient receptor potential cation channel 6 (TRPC6) is a calcium channel located in podocyte membrane. The present study evaluated the alteration of TRPC6 expression and the Ca(2+) influx involved in Ang II-induced podocyte apoptosis. The possible pathways related to TRPC6 in Ang II-induced podocyte apoptosis were also investigated. The apoptosis of mouse podocytes (MPC5) was induced by Ang II. The protein level of TRPC6 was increased markedly in response to Ang II stimulation, and the intracellular Ca(2+) concentration was elevated. By transfection with TRPC6 siRNA, Ang II-induced podocyte apoptosis and the transient Ca(2+) influx were inhibited. Treated with extracellular signal-regulated kinase (ERK) pathway specific inhibitor U0126 or nuclear factor-kappa B (NF-kappa B) pathway specific inhibitor ammonium pyrrolidinedithiocarbamate (PDTC) and Ang II, respectively in podocytes, not only was the TRPC6 up-regulation reduced, but the podocyte apoptosis was also decreased. Moreover, the translocation of NF-kappa B in nucleus resulted from Ang II was reduced by treatment with U0126. In conclusion, the enhancement expression of TRPC6 as well as the increased Ca(2+) influx mediated by TRPC6 channels contributed to the podocyte apoptosis. The activation of ERK pathway and subsequent translocation of NF-kappa B was possibly necessary for the up-regulation TRPC6 induced by Ang It. Exp Biol Med 234:1029-1036, 2009Medicine, Research & ExperimentalSCI(E)PubMed31ARTICLE91029-103623
The Risk Assessment of Marketing Management System on the Basis of Multi-level Fuzzy Comprehensive Evaluation
No full textpRPL: an open-source general-purpose parallel Raster Processing programming Library
No full textpRPL is an open-source general-purpose programming library developed by the author to parallelize almost any raster-processing algorithm with any arbitrary neighborhood configuration, and support any data type. This paper introduces the advanced features of pRPL, compares it with other similar programming libraries, and demonstrates the performance of a parallel geographic Cellular Automata (CA) model developed using pRPL with real-world datasets. In conclusion, pRPL effectively reduces the development complexity of parallel programming, and efficiently reduces the computing time
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