donor density
81GeSbTe — GeSbTe, or Germanium Antimony Tellurium, also known as GST, is a phase change material from the group of chalcogenide glasses, used in rewritable optical discs and phase change memory applications. Its recrystallization time is down to 20… …
82Overpopulation — Graph of human population from 10,000 BC–2000 AD showing the unprecedented population growth since the 19th century Overpopulation is a condition where an organism s numbers exceed the carrying capacity of its habitat. The term often refers to… …
83Arsenic — (pronEng|ˈɑrsənɪk) is a chemical element that has the symbol As and atomic number of 33. Arsenic was first documented by Albertus Magnus in 1250cite book |last=Emsley |first=John |title=Nature s Building Blocks: An A Z Guide to the Elements |year …
84Burma — Republic of the Union of Myanmar ပြည်ထောင်စု သမ္မတ မြန်မာနိုင်ငံတော် Pyidaunzu Thanmăda Myăma Nainngandaw …
85Electrical conduction — is the movement of electrically charged particles through a transmission medium (electrical conductor). The movement of charge constitutes an electric current. The charge transport may result as a response to an electric field, or as a result of… …
86DNA sequencing — Part of a series on Genetics Key components Chromosome DNA • RNA Genome Heredity Mutation Nucleotide Variation …
87Persistent carbene — A stable carbene: isolated 1,3 dimesitylimidazol 2 ylidene in a Schlenk flask (stir bar also present). A persistent carbene (also known as stable carbene or Arduengo carbene) is a type of carbene demonstrating particular stability. The best known …
88Gauche effect — Main article: alkane stereochemistry The term gauche refers to conformational isomers (conformers) where two vicinal groups are separated by a 60° torsion angle. IUPAC defines groups as gauche if they have a synclinal alignment of groups attached …
89Hormone replacement therapy (male-to-female) — Hormone replacement therapy (HRT) for transgender and transsexual people replaces the hormones naturally occurring in their bodies with those of the other sex. However, not all cases of hormone replacement therapy are used by transgendered people …
90Haiti — <p></p> <p></p> Introduction ::Haiti <p></p> Background: <p></p> The native Taino who inhabited the island of Hispaniola when it was discovered by Christopher COLUMBUS in 1492 were virtually… …
