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Renal portal system. A renal portal system is a portal venous system found in reptiles, and fish excluding hagfish and lampreys. It is not found in mammals. [1] Its function is to supply blood to renal tubules when glomerular filtration is absent or downregulated. [2]
The systems science portal. Systems science is an transdisciplinary [1] field that studies the nature of systems —from simple to complex—in nature, society, cognition, engineering, technology and science itself. To systems scientists, the world can be understood as a system of systems. The field aims to develop interdisciplinary foundations ...
Community portal – The central hub for editors, with resources, links, tasks, and announcements. Village pump – Forum for discussions about Wikipedia itself, including policies and technical issues. Site news – Sources of news about Wikipedia and the broader Wikimedia movement. Teahouse – Ask basic questions about using or editing ...
The Solar System Portal. The Sun and planets of the Solar System (distances not to scale) The Solar System is the gravitationally bound system of the Sun and the objects that orbit it. It was formed 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.
Portal rendering. In computer-generated imagery and real-time 3D computer graphics, portal rendering is an algorithm for visibility determination. For example, consider a 3D computer game environment, which may contain many polygons, only a few of which may be visible on screen at a given time. By determining which polygons are currently not ...
A real-time operating system (RTOS) is an operating system intended for applications with fixed deadlines ( real-time computing ). Such applications include some small embedded systems, automobile engine controllers, industrial robots, spacecraft, industrial control, and some large-scale computing systems.
The NCAA transfer portal is a National Collegiate Athletic Association (NCAA) application, [1] [2] database, [3] and compliance tool [4] launched on October 15, 2018, [4] to manage and facilitate the process for student athletes seeking to transfer between member institutions. The transfer portal permits student athletes to place their name in ...
Portal venous pressure. Portal venous pressure is the blood pressure in the hepatic portal vein, and is normally between 5-10 mmHg. [1] Raised portal venous pressure is termed portal hypertension, [2] and has numerous sequelae such as ascites and hepatic encephalopathy. [3] [4]