Results 61 to 70 of about 1,156,056 (294)

A Novel Beam Steerable Antenna Employing Tunable High Impedance Surface With Liquid Crystal

IEEE Access, 2020
A novel beam steerable antenna employing tunable high impedance surface with liquid crystal is proposed. This antenna utilizes three microstrip patches as the radiators and a tunable high impedance surface based on liquid crystal as the ground plane.
Jun Shu, Yueping Zhang, Ziyang Zheng
doaj   +1 more source

Lightning Nowcasting Using Solely Lightning Data

Atmosphere, 2023
Lightning is directly or indirectly responsible for significant human casualties and property damage worldwide. A timely prediction of its occurrence can enable authorities and the public to take necessary precautionary actions resulting in diminishing ...
Ehsan Mansouri, Amirhosein Mostajabi, Chong Tong, Marcos Rubinstein, Farhad Rachidi   +4 more
doaj   +1 more source

A Characterisation of the Weylian Structure of Space-Time by Means of Low Velocity Tests [PDF]

, 2001
The compatibility axiom in Ehlers, Pirani and Schild's (EPS) constructive axiomatics of the space-time geometry that uses light rays and freely falling particles with high velocity, is replaced by several constructions with low velocity particles only ...
Claus Lämmerzahl, F. A. E. Pirani, H. Rund, J. Audretsch, J. Douglas, J. Ehlers, J. Ehlers, J. Ehlers, J. Schröter, J. Schröter, J. Schröter, R. A. Coleman, R. A. Coleman, R. A. Coleman, R. A. Coleman, U. Heilig, U. Schelb, U. Schelb, V. Perlick, V. Perlick   +19 more
core   +2 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

The Possibility to Recreate the Shapes of Objects on the Basis of Printer Vibration in the Additive Printing Process

Applied Sciences, 2021
Information protection is an important safety issue in many human activity fields. Technological advances and related ubiquitous computerization bring new challenges in this area.
Andrzej Stańczak, Ireneusz Kubiak, Artur Przybysz, Anna Witenberg   +3 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Improvement of SAR Accuracy by Combining Two SAR Quantification Methods for Small Animals in Reverberation Chamber Above 10 GHz

IEEE Access, 2020
Two measurement-based methods are presented to quantify the whole-body-averaged specific absorption rate (WBA-SAR) and local SAR for small animals in a medium-size reverberation chamber (RC) for a bio-effect experiment at frequencies above 10 GHz.
Jingjing Shi, Jerdvisanop Chakarothai, Jianqing Wang, Osamu Fujiwara, Kanako Wake, Soichi Watanabe   +5 more
doaj   +1 more source

A Broadband Switchable Metamaterial Absorber/Reflector Based On Multi-Laps Graphene Sheets in the Terahertz Band

IEEE Photonics Journal, 2021
Switchable metamaterial absorbers/reflectors (MAs/MRs) are important bifunctional electromagnetic devices and have been the subject of numerous scientific studies.
Xuemei Du, Fengping Yan, Wei Wang, Luna Zhang, Zhuoya Bai, Hong Zhou, Yafei Hou   +6 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Compatible abelian symmetries in N-Higgs-Doublet Models [PDF]

, 2015
We analyze the compatibility between abelian symmetries acting in two different sectors of a theory using the Smith Normal Form method. We focus on N-Higgs-doublet models (NHDMs) and on the compatibility between symmetries in the Higgs potential and in ...
Nishi, C. C.
core   +2 more sources