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Note 2: Biochemists are now capable of synthesizing copies of biopolymers that should be named Synthetic biopolymer to make a distinction with true biopolymers. Note 3: Genetic engineering is now capable of generating non-natural analogues of biopolymers that should be referred to as artificial biopolymers, e.g.,
It is a portable data collection device for the life sciences. The CBL system was replaced in 1999 by the CBL 2. The TI-Nspire Lab Cradle has three analog and two digital inputs with a sampling rate of up to 100,000 readings per second. The cradle also has 32 MB of storage space to store sensor data. [16]
Entry 1, Entry 2 and Entry 3 are broadly equivalent to National Curriculum Levels 1, 2 and 3 respectively. [2] When converting qualifications to school attainment points, Entry 1 is worth 10 points, Entry 2 is worth 12 and Entry 3 is worth 14. This compares to 16 points for GCSE Grade G (the lowest GCSE pass) and 22 points for GCSE Grade F. [3]
Mechanical structures, such as aircraft, satellites, rockets, space stations, ships, and submarines, have their own particular structural loads and actions. [33] Engineers often evaluate structural loads based upon published regulations, contracts, or specifications. Accepted technical standards are used for acceptance testing and inspection.
Base of 30 St Mary Axe, London, UK The world's first diagrid hyperboloid structure in Polibino, Russia MyZeil, Frankfurt, Germany CCTV Headquarters, Beijing, China. A diagrid (a portmanteau of diagonal grid) is a framework of diagonally intersecting metal, concrete, or wooden beams that is used in the construction of buildings and roofs. [1]
LISREL (linear structural relations) is a proprietary statistical software package used in structural equation modeling (SEM) for manifest and latent variables. It requires a "fairly high level of statistical sophistication".
Only when additional functional requirements are placed on the enclosure (such as structural weight-bearing needs) does the materiality of the wall change to something beyond fabric. The mat and its use in primitive huts interchangeably as floors, walls, and draped over frames was considered by Gottfried Semper to be the origins of architecture.
The oldest archaeological evidence of copper mining and working was the discovery of a copper pendant in northern Iraq from 8,700 BCE. [2] The earliest substantiated and dated evidence of metalworking in the Americas was the processing of copper in Wisconsin, near Lake Michigan. Copper was hammered until it became brittle, then heated so it ...