Results 81 to 90 of about 846,095 (336)

Agricultural Diversification at the Margin. Strategies and Determinants in Italian Mountain and Remote Areas

Agribusiness, EarlyView.
ABSTRACT This paper explores the convergence in on‐farm diversification strategies of agricultural holdings, between remote areas and more central ones. Using Italian farm‐level data, we explore the determinants of diversification strategies across farms.
Gianluca Grilli, Francesco Pagliacci, Paola Gatto   +2 more
wiley   +1 more source

Altitude Limits for Rotating Vector Model Fitting of Pulsar Polarization

, 2012
Traditional pulsar polarization sweep analysis starts from the point dipole rotating vector model (RVM) approximation. If augmented by a measurement of the sweep phase shift, one obtains an estimate of the emission altitude (Blaskiewicz, Cordes ...
Abdo, Dyks, H. A. Craig, Harding, Hibschman, Kerr, Lyne, Parent, Radhakrishnan, Roger W. Romani, Romani, Romani, Spitkovsky   +12 more
core   +1 more source

Adriamycin-induced podocyte injury via the Sema3A/TRPC5/Rac1 pathway

Frontiers in Medicine
Podocytopathies encompass kidney diseases where direct or indirect podocyte injury leads to proteinuria or nephrotic syndrome. Although Semaphorin3A (Sema3A) is expressed in podocytes and tubular cells in adult mammalian kidneys and has a common effect ...
Yan Liu, Yan Liu, Ri-Li Ge, Zhen-Zhen Shan, Yan-Jun Wang, Yan-Yan Yang, Xue Sun, Peng-Li Luo, Peng-Li Luo   +8 more
doaj   +1 more source

Joint Situational Assessment‐Hierarchical Decision‐Making Framework for Maneuver Intent Decisions

Advanced Intelligent Systems, EarlyView.
This study introduces a new framework for decision‐making in unmanned combat aerial vehicles (UCAVs), integrating graph convolutional networks and hierarchical reinforcement learning (HRL). The method tackles adopts a curriculum‐based training approach guided by cross‐entropy rewards.
Ruihai Chen, Hao Li, Guanwei Yan, Haojie Peng, Qian Zhang   +4 more
wiley   +1 more source

Bioactive compound combinations from Rhodiola tangutica alleviate pulmonary vascular remodeling in high-altitude pulmonary hypertension rats through the PI3K–AKT pathway

Frontiers in Pharmacology
BackgroundHypoxia-induced pulmonary vascular remodeling is central to the development of high-altitude pulmonary hypertension (HAPH). Rhodiola tangutica has traditionally been used to prevent chronic mountain sickness. Although its active fraction (ACRT)
Na Yang, Meiduo Huayu, Shanshan Su, Bin Hou, Zhanting Yang, Xingmei Nan, Zhanqiang Li, Zhanqiang Li   +7 more
doaj   +1 more source

Expression of dual specificity phosphatase-1 in hypoxic RAW264.7 cells and its role in inflammatory immune response regulation

Di-san junyi daxue xuebao, 2020
Objective To investigate the expression of dual specificity phosphatase-1 (DUSP1) in hypoxic RAW264.7 macrophages and its regulatory role in hypoxia-induced RAW264.7 macrophage inflammatory immune response.
DONG Huaping, LIU Bao, ZHANG Erlong, GAO Yuqi   +3 more
doaj   +1 more source

Multicluster Distributed Optimization Strategy for Turbine Wake Environment

Advanced Intelligent Systems, EarlyView.
This article studies the wake analysis of wind farms in different aspects, including basic methods, clustering optimization, and wake optimization. Through multiclustering, the wake optimization in a specific wind farm environment is explored. And focusing on the time cost and other issues that need to be solved in practical applications, targeted ...
Zhenping Yu, Xinmeng Zhou, Yedong Huang, Kunyu Zhou, Guangming Cui, Juntian Qu   +5 more
wiley   +1 more source

Evaluation of hypoxic injuries in 7 cell lines derived from different human tissues

Di-san junyi daxue xuebao, 2019
Objective To observe hypoxic injuries in 7 cell lines derived from different human tissues to identify a cell model that is sensitive to acute hypoxic injury. Methods Seven cell lines derived from different human tissues, namely CCD 841 CoN, GES-1, HUVEC,
FENG Lan, FENG Lan, CHEN Dewei, CHEN Dewei, GAO Wenxiang   +4 more
doaj   +1 more source

Treecreeper Drone: Adaptive Mechanism for Passive Tree Trunk Perching

Advanced Intelligent Systems, EarlyView.
Taking inspiration from treecreepers, a passively triggered aerial robot that can reliably perch on vertical tree trunks is presented. The friction‐based approach combines a microspine array with a tail‐like support, and then validates via dynamic analyses and flight experiments, ensuring stable performance across trunk diameters and bark textures ...
Haichuan Li, Shane Windsor, Basaran Bahadir Kocer   +2 more
wiley   +1 more source

Aerial Anchors Positioning for Reliable RSS-Based Outdoor Localization in Urban Environments

, 2017
In this letter, the localization of terrestrial nodes when unmanned aerial vehicles (UAVs) are used as base stations is investigated. Particularly, a novel localization scenario based on received signal strength (RSS) from terrestrial nodes is introduced.
Azari, Mohammad Mahdi, Chiumento, Alessandro, Pollin, Sofie, Sallouha, Hazem   +3 more
core   +1 more source