Results 61 to 70 of about 431 (234)

SNR‐Efficient Inhomogeneous Magnetization Transfer (ihMT) for Clinical Applications at 7 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Inhomogeneous MT (ihMT) is an MRI modality sensitive to Myelin, the lipid‐rich membrane surrounding the axons. A novel ihMT saturation strategy and its associated B1+$$ {\mathrm{B}}_1^{+} $$ correction at UHF are proposed. The aim is to generate a strong ihMT effect within a clinically compatible scan time while complying with SAR ...
Timothy Anderson, Niklas Wallstein, Lucas Soustelle, Thomas Troalen, Gopal Varma, David C. Alsop, Maxime Guye, Guillaume Duhamel, Olivier M. Girard   +8 more
wiley   +1 more source

Quantifying Cardiac, Respiratory, and Low Frequency Components of CSF Motion From fMRI Inflow Effects

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Cerebrospinal fluid (CSF) flow oscillations have emerged as a potentially important marker related to brain clearance, but their acquisition often relies on specialized imaging MRI sequences. The purpose of this work was to enable quantitative assessment of CSF flow associated with cardiac, respiratory, and low‐frequency cycles using ...
Pontus Söderström, Cecilia Björnfot, Britt M. Andersson, Jan Malm, Anders Eklund, Anders Wåhlin   +5 more
wiley   +1 more source

DIEUDONNÉ DETERMINANTS FOR SKEW POLYNOMIAL RINGS [PDF]

Journal of Algebra and Its Applications, 2006
We observe that the Dieudonné determinant induces a non-negative degree function on the ring of matrices over a skew polynomial ring. We then apply this degree function to two examples. In the first one, we find an expression for the rank of the kernel of an algebraic endomorphism of [Formula: see text] over a field of characteristic p > 0.
openaire   +2 more sources

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao, Xianglong Liang, Wenxiang Deng, Jianyong Yao   +3 more
wiley   +1 more source

Distinct Symptom Occurrence Subgroups Among Patients With Colorectal Cancer: Differences in Social Determinants of Health and Diet Quality

Research in Nursing &Health, EarlyView.
ABSTRACT Colorectal cancer (CRC) is a leading cause of cancer mortality in the United States. Many patients with CRC experience physical and psychological symptoms that diminish quality of life and are shaped by social determinants of health (SDOH) and diet quality.
Youran Lee, Qing Yang, Melissa Kay, Donald E. Bailey, Biljana Gigic, Sheetal Hardikar, Adetunji T. Toriola, David Shibata, Christopher I. Li, Doratha A. Byrd, Jane C. Figueiredo, Ildiko Strehli, Megan Mclaws, Vaia Florou, Mmadili Ilozumba, Patricia Erickson, Apurva Medhe, Cornelia M. Ulrich, Rosa M. Gonzalez‐Guarda   +18 more
wiley   +1 more source

On skew polynomial rings

, 2012
In this note we consider the links of prime ideals of certain skew polynomial rings and prove our main theorem, namely theorem [5], which states the following.Let R be a noetherian ring that is link k-symmetric and let σ be an automorphism of R.Let S(R) denote the skew polynomial ring R[x,σ]. Let B be a prime ideal of S(R) that is extended from R. Then,
openaire   +2 more sources

Analysis of Trajectories of Anxiety Behaviors During Induction of Anesthesia in Children With Multiple Encounters: A Secondary Analysis of a Multicenter Retrospective Cohort Study

Pediatric Anesthesia, EarlyView.
ABSTRACT Background Preoperative anxiety is a significant stressor for children and is associated with negative postoperative outcomes. Although the incidence of difficult inductions during a single anesthetic encounter is well documented, the longitudinal trajectory of anxiety behaviors in children undergoing repeated anesthesia remains poorly ...
Annie Xin, Allan F. Simpao, Timothy Liversedge, Abby V. Winterberg, Ari Y. Weintraub, James J. Thomas, Clyde T. Matava   +6 more
wiley   +1 more source

Skew Constacyclic Codes over a Non-Chain Ring. [PDF]

Entropy (Basel), 2023
Köroğlu ME, Sarı M.
europepmc   +1 more source

Reducing Trade‐Offs of Net Zero Carbon Transitions Through Entrepreneurship and Coordinated Innovation: A Spatially Disaggregated Analysis Across Countries and World Regions

Sustainable Development, EarlyView.
ABSTRACT Transition processes towards a sustainable future benefit from historic perspectives, since feasible changes of socio‐technological conditions and processes depend on a holistic assessment of how actors are embedded in existing institutions, routines, and structures. Building on the Income–Population–Affluence–Technology equation and utilizing
Jessica Kluge, Marcus Wagner
wiley   +1 more source

DNA Code from Cyclic and Skew Cyclic Codes over F4[v]/〈v3〉. [PDF]

Entropy (Basel), 2023
Prakash O, Singh A, Verma RK, Solé P, Cheng W.   +4 more
europepmc   +1 more source