Handbooking

The Wikipedia article of the day for October 9, 2017 is DNA nanotechnology.
DNA nanotechnology is the design and manufacture of technologically useful macromolecules using nucleic acids, the building blocks of DNA. In living cells, DNA is the carrier of genetic information. In the lab, strands of nucleic acids can spontaneously bind to form strong, rigid double helix structures with precisely controlled nanoscale features. Two- and three-dimensional crystal lattices, nanotubes, polyhedra, and various functional devices have been created. Tiles of nucleic acids can be assembled into larger units. Artificial DNA structures have been used to solve basic science problems in structural biology, biophysics and X-ray crystallography, and have helped identify protein structures through nuclear magnetic resonance spectroscopy. Potential applications in molecular scale electronics and nanomedicine are being investigated. The conceptual foundation for DNA nanotechnology was first laid out by Nadrian Seeman in the early 1980s, and the field began to attract widespread interest in the mid-2000s.

Source http://handbookblogger.blogspot.com/2017/10/wikipedia-article-of-day-for-october-9.html

The Wikipedia article of the day for October 8, 2017 is Underwater diving.
Underwater diving is the practice of descending below the water’s surface to interact with the environment. Humans are not biologically adapted for deep diving, and must use special equipment to extend the depth and duration of their dives. In ambient pressure diving, with direct exposure to the pressure of the surrounding water, the diver can use breathing apparatus for scuba diving or surface-supplied diving. For repeated deep dives, divers can reduce the risk of decompression sickness by living in a pressurized environment on the surface to prevent pressurization and depressurization as they dive. Atmospheric diving suits may be used to isolate the diver from high ambient pressure. Diving activities are restricted to maximum depths of about 40 metres (130 ft) for recreational scuba diving, 530 metres (1,740 ft) for commercial saturation diving, and 610 metres (2,000 ft) if atmospheric suits are worn. The history of breath-hold diving goes back at least to classical times, and there is evidence of prehistoric hunting and gathering of seafoods that may have involved underwater swimming.

Source http://handbookblogger.blogspot.com/2017/10/wikipedia-article-of-day-for-october-8.html