Abstract: This article proposes a time-synchronized constrained controller to address the time-varying constrained reorientation problem in spacecraft attitude operations. The characteristics of ...

Each year, the southern plains of the Serengeti host one of the most dramatic wildlife events on Earth. Over a brief window of just two to three weeks, more than 400,000 wildebeest calves are born, ...

Paroxysmal supraventricular tachycardia (PSVT) is a common rapid arrhythmia observed in clinical settings, characterized by abrupt and sustained episodes lasting minutes to hours. It presents ...

Patients with irregular heartbeats — caused by atrial fibrillation (AF), the most common heart rhythm disorder — have historically been warned to limit or eliminate caffeine. But a new study suggests ...

Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China Background and aims: Data on the safety of direct current cardioversion (DCCV) in patients with ...

Synchronization abounds in nature: from the flashing lights of fireflies to the movement of fish wriggling through the ocean, biological systems are often in rhythmic movement with each other. The ...

THE NATION’S LONGEST RUNNING SYNCHRONIZED SWIMMING CLUB IS TURNING 99. THE SHARKS OF ROOSEVELT HIGH IN DES MOINES STARTED UP IN 1926. IT WAS THE FIRST CLUB THAT GIRLS AT THE SCHOOL COULD JOIN. TONIGHT ...

Electrical cardioversion is a procedure by which pads on the chest aim to return the heart to a normal rhythm following disturbances. This procedure is painful and can be distressing for the patient; ...

Background: Several clinical factors have been studied to predict atrial fibrillation (AF) recurrence after electrical cardioversion (ECV) with limited predictive value. Methods: A method able to ...

Congaree National Park in South Carolina is a wealth of biodiversity, from 397 animal species to over 800 plant species. And, while there is no precise count of insect species within this park, it’s ...