2,383 research outputs found
Vincristine: A new treatment option for Kasabach-Merritt Syndrome
Kasabach-Merritt syndrome (KMS) is characterized by a rapidly enlarging hemangioma, thrombocytopenia, microangiopathic hemolytic anemia and consumption coagulopathy as a result of platelet and red blood cell trapping and activation of clotting system within the vasculature of hemangioma. This syndrome is shown to be associated with kaposiform hemangioendotheliomas or tufted hemangioma
Nano tracks in fullerene film by dense electronic excitations
In the present work, we investigate the formation of nano tracks by cluster
and mono-atomic ion beams in the fullerene (C60) thin films by High Resolution
Transmission Electron Microscopy (HRTEM). The fullerene films on carbon coated
grids were irradiated by 30 MeV C60 cluster beam and 120 MeV Au mono-atomic
beams at normal and grazing angle to the incident ion beams. The studies show
that the cluster beam creates latent tracks of an average diameter of around 20
nm. The formation of large size nano tracks by cluster beam is attributed to
the deposition of large electronic energy density as compared to mono-atomic
beams.Comment: Under revision. Applied Surface Science (2014
Thermoluminescence studies of Si+8 ion irradiated kyanite
Thermoluminescence (TL) of natural kyanite single crystals bombarded with 100 MeVSi+8 ions with fluences in the range 1Ã10 11-5Ã1013 ions/cm2 has been studied at room temperature (RT). Two TL glows, a medium one at â¼ 445 K and another intense one at â¼ 550 K are recorded in single crystals of kyanite. However, in the case of pelletized samples, similar TL glows but with peaks at â¼ 475 and 615 K, respectively, are recorded at a warming rate of 20 K/min. It is found that as the fluence of Si+8 ion increases, the TL intensity increases. It is also found that the characteristic TL glow peaks appear at higher temperature side in pelletized kyanite than those in crystalline ones, however, the glow peak temperatures remain steady in a given system irrespective of the ion dose. The enhancement in TL intensity and shifting of TL glow peaks to higher temperature side in pelletized kyanite samples are attributed to the particle nature of the phosphor and/or pressure-induced defects in the phosphor. © 2003 Published by Elsevier Ltd
Ionoluminescence and photoluminescence in swift heavy ion-irradiated Al2SiO5
Ionoluminescence (IL) and photoluminescence (PL) of aluminum silicates irradiated with 100 MeV swift Ni+8 ions with fluences in the range 7.5Ã
1010-1.0Ã1014 ions/cm2 have been studied. A pair of IL bands with peaks at â¼ 775 and 875 nm are recorded in both natural crystalline and pelletized kyanite samples. And, a pair of sharp as well as strong PL emission bands with peaks at â¼ 688.7 and 705.9 nm along with a broad emission band in the region 710-900 nm are recorded in these samples with an excitation of 442 nm laser beam. It is found that both IL and PL intensities decrease with increase of ion fluence. The decrease of IL is attributed to amorphization of the material. © 2003 Published by Elsevier Ltd
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