Results 41 to 50 of about 20,713 (214)

Strongly Enhanced Sensitivity in Planar Microwave Sensors Based on Metamaterial coupling

open access: yes, 2017
Limited sensitivity and sensing range are arguably the greatest challenges in microwave sensor design. Recent attempts to improve these properties have relied on metamaterial- (MTM-) inspired open-loop resonators (OLRs) coupled to transmission lines (TLs)
Abdolrazzaghi, Mohammad   +2 more
core   +1 more source

Efficient integral equation formulation for inductive waveguide components with posts touching the waveguide walls [PDF]

open access: yes, 2007
In this paper a surface integral equation technique is employed for the analysis of inductive waveguide problems containing metallic or dielectric objects of arbitrary shape, focusing on the case where these objects are connected to the waveguide walls ...
Cañete Rebenaque, David   +4 more
core   +2 more sources

Advertisement of unhealthy commodities in Bristol and South Gloucestershire and rationale for a new advertisement policy

open access: yesBMC Public Health, 2023
Background Bristol City Council introduced a new advertisement policy in 2021/2022 which included prohibiting the advertising of unhealthy food and drink (HFSS), alcohol, gambling and payday loans across council-owned advertising spaces.
Lauren J. Scott   +9 more
doaj   +1 more source

Variability in Physical Activity Assessed with Accelerometer Is an Independent Predictor of Mortality in CHF Patients. [PDF]

open access: yesPLoS ONE, 2016
AIMS:Patients with heart failure often display a distinct pattern of walking characterized by short step-length and frequent short pauses. In the current study we sought to explore if qualitative aspects of movement have any additive value to established
Michael Melin   +4 more
doaj   +1 more source

Additively Manufactured Porous Ceramics as Tunable Dielectrics for Passive Temperature Sensing

open access: yesAdvanced Materials Technologies, EarlyView.
Porous ceramic lattices, 3D‐printed from a multicomponent oxide ink, are integrated with LC resonators for passive wireless temperature sensing. By tuning porosity, the dielectric properties and RF response are engineered to produce distinct resonant frequency shifts with temperature. The results establish a structure‐driven approach to customizing the
Sogol Heidarishahrivar   +5 more
wiley   +1 more source

New technology based on clamping for high gradient radio frequency photogun [PDF]

open access: yes, 2015
High gradient rf photoguns have been a key development to enable several applications of high quality electron beams. They allow the generation of beams with very high peak current and low transverse emittance, satisfying the tight demands for free ...
Alesini, David   +10 more
core   +2 more sources

Extended hesitant fuzzy sets

open access: yesTechnological and Economic Development of Economy, 2016
Hesitant fuzzy sets (HFSs) are a useful tool to manage situations in which the decision makers (DMs) hesitate about several possible values for the membership to assess a variable, alternative, etc.
Bin Zhu, Zeshui Xu
doaj   +1 more source

Printable Liquid Metal‐Textiles for Deformation‐Insensitive and Electromagnetically Robust mmWave Devices

open access: yesAdvanced Science, EarlyView.
We present a textile‐compatible, self‐healing liquid metal ink and a dual‐mask printing technique for high‐resolution patterning. Using this approach, we demonstrate high‐performance millimeter‐wave (mmWave) electronic textiles that exhibit exceptional insensitivity to deformation.
Lu Ju   +11 more
wiley   +1 more source

Consensus Statement on Front-of-Pack Nutrition Warning Labels on the High Fat, Sugar & Salt Food/Drink Products in India

open access: yesPreventive Medicine: Research & Reviews
India is facing a growing epidemic of non-communicable diseases (NCDs) such as obesity, diabetes and cardiovascular illnesses, which is driven largely by the consumption of unhealthy diets containing ultra-processed and high-fat, sugar and salt (HFSS ...
Arun Gupta   +27 more
doaj   +1 more source

Dirac Surface‐State Driven Broad Spectral Band Low Quantum Energy Photoresponse in Quaternary Topological BiSbSe2Te

open access: yesAdvanced Science, EarlyView.
Quaternary topological BiSbSe2Te are synthesized and demonstrates a broad spectral band photoresponse, ranging from infrared to terahertz and to millimeter waves, with a particular excellence on detection of low quantum energy terahertz photons. The observed photoresponse is attributed to the excitation of plasmonic nonequilibrium electrons originating
Tianning Zhang   +14 more
wiley   +1 more source

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