Results 61 to 70 of about 2,709 (248)

Global warming strengthens atmospheric ducting

Atmospheric ducts (ADs) provide efficient electromagnetic wave channels for beyond line-of-sight (BLOS) propagation and can serve as a sensitive diagnostic factor for the change of lower atmosphere. Based on the ERA5 model-level reanalysis data (1979–2024), a global-scale assessment of the response of AD evolution to global warming has been revealed ...
xiaofeng Zhao, chunshan wei, Dongxiao Wang, Pinglv Yang, Yudi Liu, Xiaoqian Zhu   +5 more
openaire   +1 more source

Analysis and avoidance method of 5G atmospheric duct interference

Dianxin kexue, 2022
Atmospheric duct effects can produce the remote interference, which will lead to serious problems of the network degradation.Firstly, a detailed analysis of the causes of 5G atmospheric duct interference was achieved through the system principle analysis.Then, a 5G atmospheric duct interference waveform identification algorithm was proposed.Finally ...
Tinglan WANG, Xingzheng LI, Yimin ZUO, Dongchen ZHANG   +3 more
openaire   +2 more sources

Communication of Business‐Nonprofit Collaborations and Environmental Legitimacy: Exploratory Insights From Italian Firms

Business Strategy and the Environment, EarlyView.
ABSTRACT Collaborations with nonprofits can enhance firms' legitimacy, yet the relationship between their communication and corporate environmental legitimacy remains poorly understood. Furthermore, research lacks an analysis of the communication of business‐nonprofit collaborations through multiple actors' perspectives.
Andrea Rizzuni, Daniel Lundgaard, Maria Alejandra Torres‐Cuello, Steen Vallentin   +3 more
wiley   +1 more source

Bridging Anatomy Curricular Gaps: Leveraging Student‐Created Video Resources in Elective Courses

Clinical Anatomy, EarlyView.
ABSTRACT Traditional anatomical donor‐based dissection has long served as the cornerstone of anatomical education. However, with increasingly condensed curricula and diverse student learning preferences, multimedia tools have become vital adjuncts to support engagement, comprehension, and accessibility. At the Carle Illinois College of Medicine (CI MED)
Megan A. Lim, Laura Shackelford, Wessam Ibrahim   +2 more
wiley   +1 more source

Toward a Paradigm Shift in Low‐Temperature SCR Catalyst Design: Defect Engineering and Data‐Driven Integration

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work systematically reviews the key factors influencing the performance of low‐temperature NH3‐SCR. The mechanism and challenges of defect engineering strategies, such as oxygen vacancies, heteroatom doping, crystal facet exposure, and surface reconstruction, in controlling both activity and selectivity were analyzed.
Rongrong Kan, Pinjing He, Fan Lü, Hua Zhang   +3 more
wiley   +1 more source

Human Excreta as a Stable and Important Source of Atmospheric Ammonia in the Megacity of Shanghai.

PLoS ONE, 2015
Although human excreta as a NH3 source has been recognized globally, this source has never been quantitatively determined in cities, hampering efforts to fully assess the causes of urban air pollution.
Yunhua Chang, Congrui Deng, Anthony J Dore, Guoshun Zhuang   +3 more
doaj   +1 more source

Experimental Investigation on Steam Generation Performance of a Solid Thermal Storage‐Based Steam Production System

Energy Science &Engineering, EarlyView.
1. Against the backdrop of the dual carbon goals and the transformation of the energy structure, traditional coal and natural gas boilers struggle to meet the demand for economical and stable steam supply in small and medium‐sized enterprises. In response, this study proposes a solid‐state thermal storage steam production system, aiming to provide a ...
Sun Yong, Liu Sai, Liu Congcong, Yang Chunhui, Yao Xinyu, Zhang Yujin   +5 more
wiley   +1 more source

Dexmedetomidine infusions improve cardiovascular and renal function in anaesthetised, experimentally endotoxaemic horses

Equine Veterinary Journal, EarlyView.
Abstract Background Dexmedetomidine infusions are beneficial in anaesthetised endotoxaemic horses when administered concurrent to endotoxin, but post‐conditioning effects are unknown. Objectives To evaluate whether a dexmedetomidine infusion is beneficial in horses administered Escherichia coli O55:B5 lipopolysaccharides (LPS) endotoxin prior to ...
Sera Lee, Rachel C. Hector, Lynn Pezzanite, Eric Gilleland, Marlis L. Rezende   +4 more
wiley   +1 more source

Experimental Investigation of the Continuous Transition of Flame-Spreading near the Blow-Off Limit

Journal of Combustion, 2020
This study investigates the continuous transition from flame-spreading to stabilized combustion near the blow-off limit in opposed forced flow by using expanding solid fuel duct that makes distribution of oxidizer velocity in the axial direction.
K. Komizu, Y. Saito, A. Tsuji, H. Nagata
doaj   +1 more source

Atmospheric ducts can transport sound in two directions [PDF]

Eos, Transactions American Geophysical Union, 2014
When conditions are right, temperature gradients and fast jets of wind can help to establish atmospheric ducts—pathways in the atmosphere that promote the propagation of low‐frequency acoustic waves (infrasound)—across long distances. Atmospheric ducts are part of the basis behind over‐the‐horizon radar, the source of some particularly clear mirages ...
openaire   +1 more source