Results 51 to 60 of about 1,077,149 (188)

Modular Metamaterials for Adaptable MRI Signal Control: Combining Dipole Array With a New Hexagon‐Based Artificial Dielectrics

Advanced Science, EarlyView.
A flexible, hexagonally packed artificial dielectric providing a wide range of effective permittivities (εr ≈ 30–1400) without lumped elements was developed for clinical and ultra‐high‐field MRI. Combined with modular passive‐dipole arrays, the system enables adaptable RF field shaping through electric‐ and magnetic‐dipole tuning.
Santosh Kumar Maurya, Ilan Goldberg, Rita Schmidt   +2 more
wiley   +1 more source

ON THE PRINCIPLES OF MATTER MOTION IN SPACE AND TIME [PDF]

Annals: Series on engineering sciences (Academy of Romanian Scientists), 2009
One reconsiders the well-known principles of matter motion in space and time, retaining for the inertia principle the name of motion conservation principle and introducing a new principle of the space treble entity, that explain the composition and ...
Mircea Dimitrie CAZACU
doaj  

Multimodal Imaging of Hypoxia, Metabolism and pH in Feline Sarcoma Using Hyperpolarized 13C MRI and PET

Advanced Science, EarlyView.
This work presents a clinically deployable simultaneous PET/MRI workflow which integrates hyperpolarized 13C imaging of metabolism and extracellular pH with [18F]FMISO PET to characterize hypoxia, acidosis, and metabolic reprogramming in feline sarcoma.
Martin Grashei, Tanja Groll, Stephanie Kahl, Silke Baer, Elisabeth Bliemsrieder, Frits H. A. van Heijster, Andre Wendlinger, Pascal Wodtke, Jorge Cabello, Susan Notohamiprodjo, Christian Lohrmann, Markus Schwaiger, Wolfgang A. Weber, Katja Steiger, Andrea Meyer‐Lindenberg, Johannes Hirschberger, Christine Baumgartner, Franz Schilling   +17 more
wiley   +1 more source

SVD-Aided Power Allocation and Iterative Detection Scheme for Turbo-BLAST System with Imperfect Channel State Information

International Journal of Antennas and Propagation, 2011
A new technique that combines adaptive power allocation and iterative detection based on singular value decomposition (SVD) is introduced for the modified Turbo-BLAST system with imperfect channel state information (I-CSI).
Xiaomin Chen, Xiangbin Yu, Dazhuan Xu
doaj   +1 more source

1,2‐propanediol reformulation improves tribromoethanol safety and reveals pontine GABRA1 enrichment as a candidate mechanistic correlate of anesthesia

Animal Models and Experimental Medicine, EarlyView.
This study develops a reformulated tribromoethanol (TBE) anesthetic using 1,2‐propanediol as a solvent to overcome solvent‐related toxicity. The novel formulation demonstrates, cardiovascular stability, and survival in prolonged protocols. It provides potent, dose‐dependent anesthesia without strain or sex differences.
Xia Li, Yanming Chen, Xinyi Xiao, Guoheng Xu   +3 more
wiley   +1 more source

Turbo Coding, Turbo Equalisation and Space-Time Coding

, 2002
Against the backdrop of the emerging 3G wireless personal communications standards and broadband access network standard proposals, this volume covers a range of coding and transmission aspects for transmission over fading wireless channels.
Yeap, B.L., Liew, T.H., Hanzo, L.
core   +1 more source

Turbo codes and turbo algorithms

Journal of Communications Software and Systems, 2006
In the first part of this paper, several basic ideas that prompted the coming of turbo codes are commented on. We then present some personal points of view on the main advances obtained in past years on turbo coding and decoding such as the circular ...
Claude Berrou, Charlotte Langlais, Yi Yu
doaj  

An Off-Grid Turbo Channel Estimation Algorithm for Millimeter Wave Communications

Sensors, 2016
The bandwidth shortage has motivated the exploration of the millimeter wave (mmWave) frequency spectrum for future communication networks. To compensate for the severe propagation attenuation in the mmWave band, massive antenna arrays can be adopted at ...
Lingyi Han, Yuexing Peng, Peng Wang, Yonghui Li   +3 more
doaj   +1 more source

Shift Angle and Medial Retraction of the Deep Layer on Magnetic Resonance Imaging Are Associated With Intraoperative Reparability in Arthroscopic Rotator Cuff Repair

Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.
Purpose To determine whether magnetic resonance imaging‐based measurements of the deep layer, specifically the shift angle and medial retraction, can predict intraoperative reparability of large‐to‐massive rotator cuff tears. Methods This retrospective study included patients who underwent arthroscopic repair of large‐to‐massive rotator cuff tears ...
Hideya Yoshimura, Hiroko Ueki, Naoko Araya   +2 more
wiley   +1 more source

Using gudermannian to improve the turbo-code mathematical principles in 3g communication systems

2013 International Siberian Conference on Control and Communications (SIBCON), 2013
This paper discusses the promising modern turbo-codes in the concept of 3rd generation communication systems. Presents the extended mathematical principles of the algebra logarithm of the likelihood function for N statistically independent information bits with the transition to trigonometric and hyperbolic functions by using Gudermannian expression ...
Romanyuk, O. N., Ivanov, Y. Y., Kulyk, A. Y.   +2 more
openaire   +2 more sources