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A Reading Range- and Frequency-Reconfigurable Antenna for Near-Field and Far-Field UHF RFID Applications.
Sensors (Basel)
January 2025
Department of Electrical and Electronic Engineering, The University of Manchester, Manchester M13 9PL, UK.
In radio frequency identification (RFID), differences in spectrum policies and tag misreading in different countries are the two main issues that limit its application. To solve these problems, this article proposes a composite right/left-handed transmission line (CRLH-TL)-based reconfigurable antenna for ultra-high frequency near-field and far-field RFID reader applications. The CRLH-TL is achieved using a periodically capacitive gap-loaded parallel plate line.
View Article and Find Full Text PDFConspicuous Animals Remain Alert When Under Cover but Do Not Differ in the Temporal Course of Vigilance from Less Conspicuous Species.
Animals (Basel)
January 2025
School of Biological & Environmental Sciences, Liverpool John Moores University, Liverpool L3 3AF, UK.
Conspicuousness increases the risk of predation. One strategy to reduce this risk is to increase vigilance. We investigated the frequency of head movements as a measure of vigilance at waterholes in two related songbird species that differed in their conspicuousness: the Gouldian finch and the long-tailed finch.
View Article and Find Full Text PDFA randomized, placebo-controlled, cross-over trial of ketamine in Rett syndrome.
J Neurodev Disord
January 2025
Rett Syndrome Research Trust, Trumbull, CT, USA.
Background: Preclinical studies and anecdotal case reports support the potential therapeutic benefit of low-dose oral ketamine as a treatment of clinical symptoms in Rett syndrome (RTT); however, no controlled studies have been conducted in RTT to evaluate safety, tolerability and efficacy.
Design: This was a sequentially initiated, dose-escalating cohort, placebo-controlled, double blind, randomized sequence, cross-over study of oral ketamine in 6-12-year-old girls with RTT to evaluate short-term safety and tolerability and explore efficacy.
Methods: Participants were randomized to either five days treatment with oral ketamine or matched placebo, followed by a nine-day wash-out period and then crossed-over to the opposite treatment.
Study on the relationship between indoor ventilation frequency and anxiety and depression symptoms in older persons: based on the data of 2018 CLHLS.
BMC Geriatr
January 2025
Nursing School, Health Science Center, Hunan Normal University, Changsha, China.
Background: To investigate the association between indoor ventilation frequency and symptoms of depression and anxiety in older persons.
Methods: A binary logistic regression model was used to analyze the effects of indoor ventilation frequency on depression and anxiety by using data from the 2018 Chinese longitudinal healthy longevity survey (CLHLS).
Results: A total of 9,690 older persons with an average age of (83.
Spreading dynamics of information on online social networks.
Proc Natl Acad Sci U S A
January 2025
Department of Statistics and Data Science, College of Science, Southern University of Science and Technology, Shenzhen 518055, China.
Social media is profoundly changing our society with its unprecedented spreading power. Due to the complexity of human behaviors and the diversity of massive messages, the information-spreading dynamics are complicated, and the reported mechanisms are different and even controversial. Based on data from mainstream social media platforms, including WeChat, Weibo, and Twitter, cumulatively encompassing a total of 7.
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