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Vor 2 Tagen · Infobox references. Tetrodotoxin ( TTX) is a potent neurotoxin. Its name derives from Tetraodontiformes, an order that includes pufferfish, porcupinefish, ocean sunfish, and triggerfish; several of these species carry the toxin.
Vor einem Tag · Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished from each other by the number of protons that are in their atoms. For example, any atom that contains 11 protons is sodium ...
Vor 5 Tagen · 2.36 billion / 33% (2015) [2] Anemia or anaemia ( British English) is a blood disorder in which the blood has a reduced ability to carry oxygen. This can be due to a lower than normal number of red blood cells, a reduction in the amount of hemoglobin available for oxygen transport, or abnormalities in hemoglobin that impair its function.
Vor 2 Tagen · Gasoline ( / ˈɡæsəliːn /) or petrol ( / ˈpɛtrəl /) is a petrochemical product characterized as a transparent, yellowish, and flammable liquid normally used as a fuel for spark-ignited internal combustion engines.
Vor 5 Tagen · CI chondrites, C1 chondrites, CI chondrite meteorites, C1 chondrite meteorites. CI chondrites, also called C1 chondrites or Ivuna-type carbonaceous chondrites, are a group of rare carbonaceous chondrite, a type of stony meteorite. They are named after the Ivuna meteorite, the type specimen. CI chondrites have been recovered in France, Canada ...
Vor einem Tag · Ozone reacts directly with organic double bonds. Also, when ozone breaks down to dioxygen it gives rise to oxygen free radicals, which are highly reactive and capable of damaging many organic molecules. Moreover, it is believed that the powerful oxidizing properties of ozone may be a contributing factor of inflammation. The cause-and-effect ...
Vor einem Tag · Nitrile sind eine Gruppe chemischer Verbindungen mit der allgemeinen Formel R–C≡N. Die funktionelle Gruppe aus Kohlenstoff und dreifach gebundenem Stickstoff wird als Nitril- oder Cyanogruppe bezeichnet. Die Stoffgruppe leitet sich vom Cyanwasserstoff (Blausäure, H–C≡N) ab. Ein Beispiel hierfür ist das Acetonitril, H 3 C–C≡N, bei ...
