• In materials science, a disappearing polymorph is a form of a crystal structure (a morph) that is suddenly unable to be produced, instead transforming...
    41 KB (5,131 words) - 21:37, 25 June 2025
  • Thumbnail for Metanilic acid
    slightly soluble in water. The crystal structure called Form I is a disappearing polymorph that cannot be produced by researches anymore while Form II and...
    4 KB (179 words) - 00:29, 23 January 2025
  • is carried out. Metastable polymorphs are not always reproducibly obtained, leading to cases of "disappearing polymorphs", with usually negative implications...
    44 KB (4,671 words) - 12:53, 30 June 2025
  • Thumbnail for Ice-nine
    in Kurt Vonnegut's 1963 novel Cat's Cradle. Ice-nine is described as a polymorph of ice which instead of melting at 0 °C (32 °F), melts at 45.8 °C (114...
    9 KB (1,133 words) - 07:47, 17 May 2025
  • Thumbnail for Ritonavir
    and the incident is often cited as a high-profile example of disappearing polymorphs. The company's research and development teams ultimately solved...
    42 KB (3,574 words) - 22:05, 29 May 2025
  • Thumbnail for Polymorphism (biology)
    In biology, polymorphism is the occurrence of two or more clearly different morphs or forms, also referred to as alternative phenotypes, in the population...
    31 KB (3,947 words) - 02:58, 10 April 2025
  • Ostwald's rule (category Polymorphism (materials science))
    temperatures and pressures. Chemical crystallography before X-rays Disappearing polymorph Ostwald, W. (1897). "Studien über die Bildung und Umwandlung fester...
    3 KB (310 words) - 09:56, 17 June 2025
  • Thumbnail for Seed crystal
    Micro-pulling-down Polycrystal Single crystal Wafer (electronics) Disappearing polymorphs Chemistry portal Physics portal "Cocoa butter Silk". v t e...
    3 KB (343 words) - 05:37, 1 July 2024
  • Thumbnail for Aspirin
    April 2014. Bučar DK, Lancaster RW, Bernstein J (June 2015). "Disappearing polymorphs revisited". Angewandte Chemie. 54 (24): 6972–6993. doi:10.1002/anie...
    169 KB (18,178 words) - 19:23, 30 June 2025
  • Thumbnail for Jack D. Dunitz
    doi:10.1002/hlca.19860690518. Dunitz, J. D.; Bernstein, J. (1995). "Disappearing Polymorphs". Accounts of Chemical Research. 28 (4): 193. doi:10.1021/ar00052a005...
    22 KB (1,911 words) - 01:59, 12 November 2024
  • Multiple dispatch (category Polymorphism (computer science))
    than one of its arguments. This is a generalization of single-dispatch polymorphism where a function or method call is dynamically dispatched based on the...
    52 KB (5,927 words) - 11:40, 28 May 2025
  • Thumbnail for Calcium hydroxide
    Corals of order Scleractinia build their endoskeletons from aragonite (a polymorph of calcium carbonate). When used for this purpose, limewater is usually...
    23 KB (2,247 words) - 08:39, 21 May 2025
  • Thumbnail for Cnidaria
    number of middle-layer cells and types are much lower than in sponges. Polymorphism refers to the occurrence of structurally and functionally more than two...
    84 KB (9,113 words) - 01:46, 24 May 2025
  • once even in German: "Was für ein Kerl!" After encountering a polymorph in "Emohawk: Polymorph II" (S6,E4), the original hologram Rimmer is robbed of his...
    55 KB (5,483 words) - 08:39, 12 May 2025
  • Thumbnail for Timeline of human evolution
    Chun-jie; Zhong, Hua; Ma, Run-lin Z; Su, Bing (2010). "The ADH1B Arg47His polymorphism in East Asian populations and expansion of rice domestication in history"...
    88 KB (3,512 words) - 16:38, 19 June 2025
  • Thumbnail for Blue-tailed damselfly
    In order to avoid unwanted mating attempts, females have developed polymorphisms that allow some of them to avoid recognition by males by mimicking male...
    15 KB (1,625 words) - 12:24, 23 May 2025
  • studied markers in classical genetics of human populations. Although this polymorphism was observed at other fingers as well, for this kind of research, the...
    9 KB (767 words) - 06:21, 15 November 2024
  • Thumbnail for Red Dwarf
    Two of Red Dwarf VI was titled "Polymorph II: Emohawk" despite the lead-off episode's actual title of "Emohawk: Polymorph II." Three episodes of Series...
    148 KB (13,756 words) - 11:28, 1 July 2025
  • point may involve more than one solid phase, for substances with multiple polymorphs. Helium-4 is a special case that presents a triple point involving two...
    251 KB (31,179 words) - 19:07, 15 June 2025
  • variables remain in existence permanently; rather than appearing and disappearing as functions are called and exited, they retain their values even after...
    21 KB (2,815 words) - 11:57, 29 June 2025
  • Thumbnail for Restless legs syndrome
    E (2014). "Periodic leg movements during sleep are associated with polymorphisms in BTBD9, TOX3/BC034767, MEIS1, MAP2K5/SKOR1, and PTPRD". Sleep. 37...
    79 KB (8,355 words) - 23:08, 3 June 2025
  • Thumbnail for Macro-haplogroup L
    hominins) and left genetic traces by interbreeding with Neanderthals before disappearing. Haplogroup L1 diverged from L at about 140,000 years ago. Its emergence...
    43 KB (4,250 words) - 06:08, 2 June 2025
  • Thumbnail for Bryozoa
    so these are not considered heterozooids. "Female" polymorphs are more common than "male" polymorphs, but specialized zooids that produce sperm are also...
    136 KB (13,228 words) - 02:27, 2 June 2025
  • Thumbnail for Red imported fire ant
    segments of the funiculus are twice as long and broad in larger workers. Polymorphism occurs in all species and the mandibles bear four teeth. The following...
    232 KB (27,670 words) - 00:30, 28 June 2025
  • Thumbnail for Polistes fuscatus
    Other eusocial insects, such as soldier termites, have developed guard polymorphs that specialize in nest defense. Paper wasps on the other hand, have only...
    35 KB (4,559 words) - 23:14, 1 July 2025
  • Thumbnail for Tempered chocolate
    ability of cocoa butter to crystallize in different forms is known as polymorphism. Of the forms the cocoa butter takes, ones that are more dense and have...
    14 KB (1,810 words) - 17:16, 1 March 2025
  • Thumbnail for Surface-enhanced Raman spectroscopy
    nanoparticles and Raman-active dyes, such as Cy3. Specific single nucleotide polymorphisms (SNP) can be identified using this technique. The gold nanoparticles...
    45 KB (4,993 words) - 23:36, 23 June 2025
  • Thumbnail for Turkic peoples
    Xiongnu" groups during the Iron Age. A 2018 autosomal single-nucleotide polymorphism study suggested that the Eurasian Steppe slowly transitioned from Indo...
    199 KB (21,511 words) - 20:24, 9 June 2025
  • once-plentiful clones dwindled dramatically in number. Some clonal types disappeared entirely. Meanwhile, sexual snail populations remained much more stable...
    29 KB (3,520 words) - 21:05, 25 May 2025
  • Normand N, Halmos A, Papp Z, Witkin SS (March 2009). "Fas (TNFRSF6) gene polymorphism in pregnant women with hemolysis, elevated liver enzymes, and low platelets...
    33 KB (3,742 words) - 22:30, 13 April 2025