Business
The US Commerce Department on Thursday blacklisted 36 Chinese companies including top producers of advanced computer chips, severely restricting their access to American technology.
Dec 15, 2022
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Electronics & Semiconductors
New materials that can both harvest and emit light offer exciting potential for technologies that range from solar cells to TV and display screens. In a new study, researchers have developed a new way of enhancing the stability ...
Dec 13, 2022
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Consumer & Gadgets
You might take photos and selfies with your phone's camera, or scan a QR code. But there is much more you can do with it. Astronomer Olivier Burggraaff developed a phone attachment that allows you to take measurements of ...
Dec 13, 2022
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Electronics & Semiconductors
Organic photovoltaics (OPVs), solar technologies based on organic semiconductors, have shown great promise both for the scalable provision of clean energy and for the development of solar-powered wearable electronics. Despite ...
Internet
Elon Musk relaunched a Twitter subscription service on Monday after a first attempt saw an embarrassing spate of fake accounts that scared advertisers and cast doubt on the site's future.
Dec 12, 2022
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Engineering
Building standards are failing to ensure offices, shops, public buildings and homes provide healthy ventilation, say leading experts in a report on air pollution by England's Chief Medical Officer.
Dec 9, 2022
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Energy & Green Tech
Flow batteries (FBs) are promising in large-scale energy storage due to their high security and effectiveness. Among them, aqueous organic flow batteries (AOFBs) that utilize structural tunable and eco-friendly redox-active ...
Dec 8, 2022
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Consumer & Gadgets
Musicians worldwide have been placing their tracks with global streaming platforms such as Spotify for many years. South African musicians, however, have reported only sparse earnings from streaming music online.
Dec 6, 2022
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Energy & Green Tech
Recent developments have enabled perovskite solar cells (PSCs) to achieve power conversion efficiencies exceeding 25.7%; thus, these devices are considered rising stars in the photovoltaics field. However, the homogeneous ...
Nov 29, 2022
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Energy & Green Tech
Organic solar cells are photovoltaic technologies with light-absorbing layers made of conductive organic polymers or organic molecules. These solar energy solutions can have notable advantages over their non-organic counterparts, ...
In biology, an organism is any living system (such as animal, plant, fungus, or micro-organism). In at least some form, all organisms are capable of response to stimuli, reproduction, growth and development, and maintenance of homeostasis as a stable whole. An organism may either be unicellular (single-celled) or be composed of, as in humans, many billions of cells grouped into specialized tissues and organs. The term multicellular (many-celled) describes any organism made up of more than one cell.
The terms "organism" (Greek ὀργανισμός - organismos, from Ancient Greek ὄργανον - organon "organ, instrument, tool") first appeared in the English language in 1701 and took on its current definition by 1834 (Oxford English Dictionary).
Scientific classification in biology considers organisms synonymous with life on Earth. Based on cell type, organisms may be divided into the prokaryotic and eukaryotic groups. The prokaryotes represent two separate domains, the Bacteria and Archaea. Eukaryotic organisms, with a membrane-bounded cell nucleus, also contain organelles, namely mitochondria and (in plants) plastids, generally considered to be derived from endosymbiotic bacteria. Fungi, animals and plants are examples of species that are eukaryotes.
More recently a clade, Neomura, has been proposed, which groups together the Archaea and Eukarya. Neomura is thought to have evolved from Bacteria, more specifically from Actinobacteria.
This text uses material from Wikipedia, licensed under CC BY-SA
