Results 51 to 60 of about 4,722,147 (302)

The Mechanisms of Thrombin Formation [PDF]

open access: yes, 1991
The formation of thrombin in the blood results from a complicated series of chemical and physical interactions; its subsequent inactivation also. In vivo these opposite mechanisms (activation-inactivation) are tuned so precisely that the blood remains fluid in the vessels but any leak is promptly mended.
Beguin, S., Devilee, P.P., Hemker, H.C.
openaire   +2 more sources

Mechanisms of Plaque Formation and Rupture [PDF]

open access: yesCirculation Research, 2014
Atherosclerosis causes clinical disease through luminal narrowing or by precipitating thrombi that obstruct blood flow to the heart (coronary heart disease), brain (ischemic stroke), or lower extremities (peripheral vascular disease). The most common of these manifestations is coronary heart disease, including stable angina pectoris and the acute ...
Bentzon, Jacob Fog; id_orcid 0000-0002-3020-5002   +3 more
openaire   +3 more sources

Effect of Ion Mass Transfer and Electric Field Distribution on the Formation of Void Defect in Electroformed Nickel Microcolumns

open access: yesElectrochemistry, 2023
The void defect inside the electroformed nickel microcolumns is a common problem affecting the performance of the microsystem. In this study, a simulation model for the dynamic deposition of microcolumns is set up to clarify the changing characteristics ...
Bingyan JIANG   +4 more
doaj   +1 more source

Mechanism for puddle formation in graphene

open access: yes, 2011
When graphene is close to charge neutrality, its energy landscape is highly inhomogeneous, forming a sea of electron-like and hole-like puddles, which determine the properties of graphene at low carrier density.
Adam, Shaffique   +5 more
core   +1 more source

Planet-driven Spiral Arms in Protoplanetary Disks. I. Formation Mechanism [PDF]

open access: yes, 2017
Protoplanetary disk simulations show that a single planet can excite more than one spiral arm, possibly explaining the recent observations of multiple spiral arms in some systems. In this paper, we explain the mechanism by which a planet excites multiple
Bae, Jaehan, Zhu, Zhaohuan
core   +3 more sources

Magnesium Doped Hercynite: Preparation and Formation Mechanism

open access: yesMedžiagotyra, 2018
We investigated the formation mechanism of magnesium doped hercynite during reaction sintering process at 1400 ºC. A two-step synthesis procedure based on combining of spinel and ferrous chloride was considered here.
Hossien RAHMANI-BOLDAJI   +3 more
doaj   +1 more source

The Formation Mechanism of Brown Dwarfs

open access: yes, 2002
We present results from the first hydrodynamical star formation calculation to demonstrate that brown dwarfs are a natural and frequent product of the collapse and fragmentation of a turbulent molecular cloud.
Bate, Matthew R.   +2 more
core   +1 more source

Chaos and a Resonance Mechanism for Structure Formation in Inflationary Models [PDF]

open access: yes, 1998
We exhibit a resonance mechanism of amplification of density perturbations in inflationary mo-dels, using a minimal set of ingredients (an effective cosmological constant, a scalar field minimally coupled to the gravitational field and matter), common to
de Oliveira H. P.   +4 more
core   +2 more sources

NRASQ61R Expression in Lymphatic Endothelial Cells Causes Enlarged Vessels, Hemorrhagic Chylous Effusions, and High Mortality in a Mouse Model of Kaposiform Lymphangiomatosis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Kaposiform lymphangiomatosis (KLA) is an aggressive complex lymphatic anomaly. Patients exhibit malformed lymphatic vessels and often develop hemorrhagic effusions and elevated angiopoietin‐2 (Ang‐2) levels. A somatic NRAS p.Q61R (NRASQ61R) mutation has been associated with KLA.
C. Griffin McDaniel   +3 more
wiley   +1 more source

The mechanism of bending-toppling loess collapse caused by headward erosion

open access: yesZhongguo dizhi zaihai yu fangzhi xuebao, 2021
Tracing erosion is the strongest dynamic geological action in loess hilly areas. It often causes the head of the ditch to retreat and the toe of the slope to be eroded, which in turn leads to collapse.
Yuxiang CHENG, Buping ZHANG, Yaming TANG
doaj   +1 more source

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