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Hace 21 horas · The United States of America ( USA or U.S.A. ), commonly known as the United States ( US or U.S.) or America, is a country primarily located in North America. It is a federation of 50 states, a federal capital district ( Washington, D.C. ), and 326 Indian reservations. [j] Outside the union of states, it asserts sovereignty over five major unincorporated island territories and various ...
Hace 2 días · Robotics is the interdisciplinary study and practice of the design, construction, operation, and use of robots. [1] Within mechanical engineering, robotics is the design and construction of the physical structures of robots, while in computer science, robotics focuses on robotic automation algorithms. Other disciplines contributing to robotics ...
Hace 3 días · Atrial fibrillation ( AF, AFib or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by rapid and irregular beating of the atrial chambers of the heart. [11] [12] It often begins as short periods of abnormal beating, which become longer or continuous over time. [4] It may also start as other forms of arrhythmia such as atrial flutter that then transform into AF. [13]
Hace 4 días · Type 1 diabetes ( T1D ), formerly known as juvenile diabetes, is an autoimmune disease that originates when cells that make insulin (beta cells) are destroyed by the immune system. [5] Insulin is a hormone required for the cells to use blood sugar for energy and it helps regulate glucose levels in the bloodstream. [6] Before treatment this results in high blood sugar levels in the body. [7 ...
Hace 2 días · The Chevrolet Silverado is a range of trucks manufactured by General Motors under the Chevrolet brand. [1] Introduced for the 1999 model year, the Silverado is the successor to the long-running Chevrolet C/K model line. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size ...
Hace 1 día · Asia shares the landmass of Eurasia with Europe, and of Afro-Eurasia with both Europe and Africa. In general terms, it is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean, and on the north by the Arctic Ocean. The border of Asia with Europe is a historical and cultural construct, as there is no clear physical and geographical separation between them. It is somewhat ...
Hace 5 días · Definición. El núcleo, en lo que se refiere a la genómica, es la organela (u orgánulo) rodeada por membrana en el interior de la célula, que contiene los cromosomas. Una matriz de orificios o poros en la membrana nuclear permite el pasaje selectivo de determinadas moléculas (como las proteínas y los ácidos nucleicos) hacia el interior o ...
