Results 1 to 10 of about 238,328 (339)
Journal of the American College of Cardiology, 2015 Mitral annulus calcification (MAC) is a chronic, degenerative process in the fibrous base of the mitral valve. Although MAC was initially thought to be an age-related degenerative process, there is accumulating evidence that other mechanisms, such as atherosclerosis and abnormal calcium-phosphorus metabolism, also contribute to the development of MAC ...
Raj R Makkar
exaly +4 more sources
Structural and Ultrastructural Assessment of the Sperm Annulus in Men with Immotile Short-tail Sperm Defects Compared to Normozoospermic Controls: A Case–control Study [PDF]
Journal of Human Reproductive SciencesBackground: The sperm annulus is a fibrous ring structure formed by septin proteins. It connects the mid-piece and principal piece of the sperm flagellum in mammals and plays a crucial role in flagellar stability and motility Aim: This study aimed to ...
Mahsa Allahgholi +3 more
doaj +2 more sources
International Journal of Anatomy Radiology and Surgery, 2022 Introduction: Measurement of the aortic and pulmonary valve dimensions is critical in diagnosing stenotic diseases as well as preparation of prosthetic valves.
Sandhya Rani Chatripalli +1 more
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TTC6-Mediated Stabilization of the Flagellum Annulus Ensures the Rapid and Directed Motion of Sperm
Cells, 2023 Sperm motility and structural integrity are essential for successful fertilization in vivo, and any hindrance of the correct assembly of the axoneme and peri-axonemal structures in the sperm flagellum can lead to fertility problems.
Ziqi Wang +11 more
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Experimental Investigation of Critical Heat Flux on Different Surfaces at Low Pressure and Low Flow
Energies, 2020 Steady state flow boiling experiments were carried out on several heated tubes with outer diameter 9.14 mm at outlet pressures 120, 200 and 300 kPa, inlet temperatures 64, 78 and 91 °C and approximately 400, 500, 600 and 800 kg/(m2·s) mass flux entering ...
Ladislav Suk +4 more
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Reviews in Cardiovascular Medicine, 2023 Background: Hypereosinophilic syndrome (HES) is a peripheral eosinophilia characterized by elevated absolute eosinophil cell count (>1.500 cells/μL) and consequent tissue and end-organ damage.
Attila Nemes +5 more
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Swirl flow in annular geometry with varying cross-section
Engineering Applications of Computational Fluid Mechanics, 2022 Swirling gas flow is an important topic of research that helps in the design of rockets, atomizers,and gas turbine combustors. In the present work, swirl flow inside annular geometries with constant and varying cross-sectional areas are examined using ...
Mohammad Raghib Shakeel +1 more
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Nagoya Mathematical Journal, 1961 Let C and C′ be two simple closed curves in the complex z-plane which have no point in common and surround the origin. Denote by D the annulus bounded by C and C′. Consider a family {γ} of rectifiable curves γ in D and the family P of all non-negative lower semi-continuous functions ρ = ρ(z) in D ...
Akaza, Tohru, Kuroda, Tadashi
openaire +2 more sources
Mathematics, 2023 Cell migration in a biological medium towards a blood vessel is modeled, as a random process, sucessively inside an annulus (two-dimensional domain) and an annular cylinder (three-dimensional domain).
Hélia Serrano +1 more
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Transient generalized Taylor-Couette flow: a semi-analytical approach
Journal of Taibah University for Science, 2020 Semi-analytical solution of transient generalized Taylor-Couette flow of a viscous, incompressible fluid between the gaps of concentric rotating cylinders under applied azimuthal pressure gradient ispresented.
Basant Kumar Jha, Yahaya Jibrin Danjuma
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