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An isolated silicon single chain end-grafted onto a substrate surface (1999)

Furukawa, K. ; Ebata, K.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 75 (1999), S. 781-783

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: We report atomic force microscopy images of one-dimensional silicon chains (polysilanes) individually bonded to a substrate surface [quartz glass (SiO2), sapphire (Al2O3), and Si(111)]. The sample was prepared by a one-to-one chemical reaction between a reactive anchor of alkylbromide on the surface and a polysilanyl lithium. We observed dot images with variable densities which depended on the reactive anchor density. Each dot, with a diameter of about 20 nm and a height of about 5 nm, corresponded to an isolated single polysilane molecule with a collapsed structure typical of usual end-grafted polymers under poor solvent conditions. © 1999 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.124511

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An inflammatory fibroid polyp of the esophagus concomitant with a superficial flat carcinoma (1999)

Morishima, Y. ; Tashiro, T. ; Nitta, H. ; [et al.]

Springer

International journal of clinical oncology 4 (1999), S. 302-306

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ISSN: 1437-7772

Keywords: Key words Inflammatory fibroid polyp ; Esophageal tumor ; Esophageal mucosal carcinoma

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract We report a rare case of an inflammatory fibroid polyp (IFP) of the esophagus associated with an extensive early mucosal carcinoma. At esophagoscopy, a polypoid lesion 2 cm in length, and a non-stained area detected by the Lugol iodine spray staining method were found in the mid-thoracic portion, and esophagectomy was performed. Endoscopic polypectomy is thought to be useful for the diagnosis of IFP, but it should be kept in mind that IFP may be concomitant with carcinoma. Indeed, in our patient, early esophageal carcinoma was discovered because of the symptoms of dysphagia induced by the IFP.