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Hace 2 días · A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
Hace 6 días · Knowledge is an awareness of facts, a familiarity with individuals and situations, or a practical skill. Knowledge of facts, also called propositional knowledge, is often characterized as true belief that is distinct from opinion or guesswork by virtue of justification. While there is wide agreement among philosophers that propositional ...
Hace 5 días · 2.4 million (2016) [9] Dementia is a syndrome associated with many neurodegenerative diseases (most commonly Alzheimer's ), which is characterized by a general decline in cognitive abilities that impacts a person's ability to perform everyday activities. This typically involves problems with memory, thinking, behavior, and motor control. [10]
Hace 3 días · A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations ( computation ). Modern digital electronic computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. The term computer system may refer to a nominally ...
Hace 2 días · Venus of Hohle Fels, Germany, oldest known sculpture of a human being, 42.000–40.000 BP Dying Gaul, or The Capitoline Gaul, a Roman marble copy of a Hellenistic work of the late 3rd century BCE, Capitoline Museums, Rome Assyrian lamassu gate guardian from Khorsabad, c. 800 –721 BCE Michelangelo's Moses, (c. 1513–1515), San Pietro in Vincoli, Rome, for the tomb of Pope Julius II Netsuke ...
Hace 2 días · Fédération Internationalede MotocyclismeGrand Prix motorcycle racing. Jorge Martin is the current championship leader. The 2024 FIM MotoGP World Championship is the premier class of the 76th Fédération Internationale de Motocyclisme (FIM) Road Racing World Championship season, the highest level of competition in motorcycle road racing .
Hace 3 días · iPad iPad Pro (6th generation) Developer Apple Manufacturer Foxconn (on contract) Pegatron Type Tablet computer Release date April 3, 2010 ; 14 years ago (April 3, 2010) (1st generation) Units sold 677.7 million as of 2022 Operating system iOS (2010–2019) iPadOS (2019–present) Connectivity WiFi, cellular, 30-pin dock connector, Lightning connector, USB-C, 3.5mm headphone jack, 3-pin "Smart ...
