Cardiology

Hypertension poorly managed in low- and middle-income countries

Health systems in low- and middle-income countries (LMICs) are poorly prepared for the increasing number of people with high blood pressure, with more than two-thirds of people affected going without treatment, according ...

Surgery

Link found between gut bacteria, successful joint replacement

Having healthy gut flora—the trillions of bacteria housed in our intestines—could lower the risk of infection following knee and hip replacement surgeries, while an unhealthy intestinal flora may increase the risk of ...

Medical research

Antimicrobial protein implicated in Parkinson's disease

An immune system protein that usually protects the body from pathogens is abnormally produced in the brain during Parkinson's disease, scientists from Sanford Burnham Prebys report. The discovery, published in Free Radical ...

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System

System (from Latin systēma, in turn from Greek σύστημα systēma) is a set of interacting or interdependent entities forming an integrated whole.

The concept of an 'integrated whole' can also be stated in terms of a system embodying a set of relationships which are differentiated from relationships of the set to other elements, and from relationships between an element of the set and elements not a part of the relational regime.

The scientific research field which is engaged in the study of the general properties of systems include systems theory, systems science, systemics and systems engineering. They investigate the abstract properties of the matter and organization, searching concepts and principles which are independent of the specific domain, substance, type, or temporal scales of existence.

Most systems share common characteristics, including:

The term system may also refer to a set of rules that governs behavior or structure.

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