Results 31 to 40 of about 28,863 (210)

Entdeckung der cyclischen Form des MRT‐pH‐Sensors Z‐OMPD ermöglicht >5% 13C‐Hyperpolarisation durch SABRE

Angewandte Chemie, EarlyView.
Mit „c‐OMPD“ entdeckten wir eine bislang unbekannte fünfgliedrige Lactolstruktur, die durch Homoaldolkondensation des zentralen Metaboliten Brenztraubensäure entsteht. Wir zeigen, dass das Cyclisierungsgleichgewicht für die Funktion von OMPD als MRT‐basierte pH‐Sonde von entscheidender Bedeutung ist, und erreichen erstmals eine 13C‐Polarisation von >5 %
Juanita Ferreira, Ivan A. Trofimov, Martin Grashei, Adriana Sacristán‐Martín, Alexander Huber, David Schleicher, Oleksiy Khavryuchenko, Franz Schilling, Andreas B. Schmidt, Max von Delius   +9 more
wiley   +1 more source

Three‐dimensional point cloud reconstruction of inverse synthetic aperture radar image sequences based on back projection and iterative closest point fusion

IET Radar, Sonar & Navigation, 2023
In order to recover the three‐dimensional (3D) structure of the target from sequential inverse synthetic aperture radar (ISAR) images, the factorisation method is generally used.
Yu Wang, Shuai Li, Tingting He, Biao Tian, Zengping Chen   +4 more
doaj   +1 more source

Autofocusing of Maneuvering Targets in Terahertz Inverse Synthetic Aperture Radar Imaging Based on Damped Newton Method

Sensors, 2022
Maneuvering target imaging based on inverse synthetic aperture radar (ISAR) imaging has recently drawn significant attention. Among the many autofocusing technologies which are crucial in ISAR imaging, minimum-entropy-based autofocusing (MEA) is highly ...
Hetong Wang, Qi Yang, Hongqiang Wang, Bin Deng   +3 more
doaj   +1 more source

Discovery of the Cyclic Form of MRI pH‐Sensor Z‐OMPD Enables >5% 13C Hyperpolarization by SABRE

Angewandte Chemie International Edition, EarlyView.
With “c‐OMPD”, we discovered a previously unknown 5‐membered lactol structure that arises from the homoaldol condensation of the central metabolite pyruvic acid. We demonstrate that the cyclization equilibrium is of crucial importance for OMPD's function as MRI‐based pH sensor and achieve for the first time 13C polarization levels (>5%) by SABRE in the
Juanita Ferreira, Ivan A. Trofimov, Martin Grashei, Adriana Sacristán‐Martín, Alexander Huber, David Schleicher, Oleksiy Khavryuchenko, Franz Schilling, Andreas B. Schmidt, Max von Delius   +9 more
wiley   +1 more source

The Revised Identification of Seniors At Risk screening tool predicts readmission in older hospitalized patients: a cohort study

BMC Geriatrics, 2022
Background The Identification of Seniors at Risk (ISAR) screening tool is a widely-used risk stratification tool for older adults in the emergency department (ED). Few studies have investigated the use of ISAR to predict outcomes of hospitalized patients.
Jane McCusker, Rebecca N. Warburton, Sylvie D. Lambert, Eric Belzile, Manon de Raad   +4 more
doaj   +1 more source

Translational Motion Compensation for ISAR Imaging Based on Range Joint Fast Orthogonal Matching Pursuit Algorithm

IEEE Access, 2022
Accurate translational motion compensation (TMC) is the key procedure of inverse synthetic aperture radar (ISAR) imaging. Under the condition of sparse aperture, the correlation of adjacent pulses is severely destroyed, which brings a few challenges to ...
Xu Wei, Jun Yang, Mingjiu Lv, Wenfeng Chen, Xiaoyan Ma   +4 more
doaj   +1 more source

Long‐Term Clinical Outcomes of Arthroscopic Suture Anchor Fixation of Bony Bankart Lesions at a Mean 18‐Year Follow‐Up

Arthroscopy, EarlyView.
Purpose To evaluate shoulder stability and function at long‐term follow‐up after arthroscopic single‐row suture anchor fixation of bony Bankart lesions. Methods This was a retrospective, single‐center study. Patients with anterior glenoid rim fractures after traumatic shoulder instability who underwent arthroscopic single‐row suture anchor fixation for
Malik Jessen, Maximilian Hinz, Johannes Plath, Bastian Scheiderer, Sebastian Siebenlist, Lucca Lacheta   +5 more
wiley   +1 more source

From Nodal Metastasis to Oncologic Recurrence in Tongue and Oral Floor Squamous Cell Carcinoma: Distinct Failure Patterns and Clinicopathological Risk Profiles

Head &Neck, EarlyView.
ABSTRACT Background Locoregional recurrence remains a clinically relevant problem in oral squamous cell carcinoma (OSCC). Whether local, ipsilateral nodal, and contralateral nodal failure represent distinct disease processes with different clinicopathological associations has not been systematically evaluated.
Jannik Ketschau, Jonathan Mohr, Alex Grabenhorst, Hannes Singer, Helena Kram, Cornelius Leopold, Nils Krautkremer, Katharina Pippich, Klaus‐Dietrich Wolff, Lucas M. Ritschl   +9 more
wiley   +1 more source

Identification of seniors at risk scoring in geriatric trauma: Exploring clinical outcome correlations

Journal of Emergencies, Trauma and Shock, 2022
Introduction: Geriatric trauma patients (GTP) make up an increasing percentage of the overall trauma population. Due to frailty, GTP are at an increased risk of morbidity and readmission.
Stephen D Dingley, Wayne B Bauerle, Christine Ramirez, Holly Weber, Rebecca Wilde-Onia, Ann-Marie Szoke, Adam Benton, Danielle Frutiger, Alaa-Eldin Mira, William Hoff, Stanislaw P Stawicki   +10 more
doaj   +1 more source

Bistatic ISAR Imaging for Nonuniformly Rotating Targets

, 2019
When a target undergoes nonuniform rotational motion (RM), conventional motion compensation (MOCOM) approaches for monostatic inverse synthetic aperture radar (ISAR) systems fail to correct the nonuniform RM error in bistatic radar systems; this failure ...
Kang, B, Ryu, B, KIM, KYUNG TAE
core   +1 more source