ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Comparative analysis of the optical quality of single In0.1Ga0.9As/Al0.33Ga0.67As quantum wells grown by molecular beam epitaxy on (100) and (311) GaAs substrates (1995)

Brandt, O. ; Kanamoto, K. ; Tsugami, M. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 67 (1995), S. 1885-1887

add to mindlist on the mindlist

Details

ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: We investigate the room-temperature photoluminescence of single In0.1Ga0.9As/Al0.33Ga0.67As quantum wells grown simultaneously on (100), (311)A, and (311)B GaAs substrates. The measurements, taken under both steady state and transient conditions, evidence that nonradiative (Shockley-Read-Hall) recombination dominates the emission of both the [100] and [311]B oriented samples at low injection levels, and is still important up to injection levels approaching those in lasers. The emission of the [311]A oriented sample is, in contrast, dominated by radiative recombination already at modest injection levels. The origin of this remarkable feature of the [311]A oriented sample is traced back to the reduced incorporation of deep recombination centers at the (311)A In0.1Ga0.9As/Al0.33Ga0.67As interface. © 1995 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.114365

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

An aggressive case of Burkitt's lymphoma with t(8;14) and c-myc rearrangement transformed from CD5+ B-cell lymphoma (1997)

Niwano, H. ; Aoki, S. ; Tsukada, N. ; [et al.]

Springer

Annals of hematology 75 (1997), S. 221-225

add to mindlist on the mindlist

Details

ISSN: 1432-0584

Keywords: Key words Burkitt's lymphoma ; t(8;14)(24q;32q) ; c-myc rearrangement ; CD5

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract We experienced a case of Burkitt's lymphoma showing an unusual surface phenotype, CD5 expression, at an early stage of the disease. Initially, this patient showed massive abdominal para-aortic lymph node swelling which rapidly developed into leukemic change. Based on the clinical course and cytogenetic features of lymphoblasts in the bone marrow, which showed t(8;14) and c-myc gene rearrangement, the patient was diagnosed with Burkitt's lymphoma. Combination chemotherapy induced short-term remission, but central nervous system (CNS) involvement developed, followed by a regrowth of lymphoma cells in the bone marrow. The bone marrow at the end stage showed monotonous expansion of large cells with conspicuous vacuolation in the basophilic cytoplasm. The initial lymphoma cells showed pan-B markers and were CD5 positive but weakly CD10 positive; however, the lymphoma cells obtained from the bone marrow at the terminal stage did not express CD5. The chromosomal t(8;14) was seen, and identical rearrangement of immunoglobulin heavy chain joining gene and c-myc gene were detected by Southern blot analysis in the bone marrow lymphoblasts throughout the clinical course. This case is evidence that remarkable transformation of CD5-positive lymphoblasts to CD5-negative lymphoblasts occurred in an identical clone of Burkitt's lymphoma.