Results 131 to 140 of about 1,186,086 (313)
An investigation of a frequency diverse array
, 2009 This thesis presents a novel concept for focusing an antenna beam pattern as a function of range, time, and angle. In conventional phased arrays, beam steering is achieved by applying a linear phase progression across the aperture.
Antonik, P.
core
Natural Frequency Response of Intraaortic Balloons
, 2009 An Intraaortic Balloon (IAB) is a cardiac assist device that consists of a catheter (lumen) and a balloon at the catheter’s distal end. A balloon pump, or IABP, and a transducer are connected to the hub of the catheter that remains outside of the body ...
K. B. Grant, A. Saigal
core +1 more source
Aging Is a Key Driver for Adult Acute Myeloid Leukemia
Aging and Cancer, EarlyView.Acute myeloid leukemia (AML) is a classical age‐related hematologic malignancy, and a key driver of AML is aging, which profoundly regulates intrinsic factors such as genomic instability, epigenetic reprogramming, and metabolic dysregulation, and alters bone marrow microenvironment.
Rong Yin, Haojian Zhang
wiley +1 more source
On the valid frequency range of Timoshenko beam theory
, 2006 The frequency equation of Timoshenko beam theory factorises for hinged-hinged end conditions, leading to a first and second spectrum of natural frequencies; the latter is largely inaccurate and can be isolated and disregarded.
Stephen, N.G., Puchegger, S.
core
Long‐Term Follow‐Up of Chemotherapy‐Associated Biological Aging in Women With Early Breast Cancer
Aging and Cancer, EarlyView.Women threated with adjuvant chemotherapy for early breast cancer have sustained long‐term increase in p16INK4a,, a robust marker of cell senescence, suggesting a chemotherapy‐associated age acceleration. p16INK4a as well as other biomarkers may identify patients at greatest risk for senescence‐related diseases of aging.
Hyman B. Muss +12 more
wiley +1 more source
Study on natural frequency response characteristics of coal vibration excited by simple harmonic wave. [PDF]
Sci Rep, 2022 Wen Z +6 more
europepmc +1 more source
Natural frequency shifting using water-based technique
Avoiding resonance, which can occur when the system is excited by a frequency equal to or close to one of the system’s natural frequencies, is crucial to ensure a safe operational system. It is essential to ensure that the system runs at a frequency away
Mahmood, QatrAlnada +3 more
core +1 more source
New Directions for Adult and Continuing Education, EarlyView.ABSTRACT Mental well‐being is central to adult learner success, yet many adult education institutions lack capacity to provide timely and accessible support. This article examines how artificial intelligence (AI) can strengthen mental health–adjacent supports in adult and continuing higher education, with attention to professional practice and ...
Adam L. McClain, Thomas Wade
wiley +1 more source
Beam Damage Assessment Using Natural Frequency Shift and Machine Learning. [PDF]
Sensors (Basel), 2022 Gillich N +6 more
europepmc +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Introduction Spinal cord infarction (SCI) is a rare but devastating myelopathy, characterized by a high disability rate and an unfavorable prognosis. It has often been underdiagnosed and misdiagnosed as idiopathic transverse myelitis (ITM). This study aimed to describe the clinical features, radiological biomarkers, treatments, and functional ...
Zeqiang Ji +13 more
wiley +1 more source