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Phys Rev Lett ; 105(8): 080502, 2010 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-20868084


We exploit the nondissipative dynamics of a pair of electrons in a large square quantum dot to perform singlet-triplet spin measurement through a single charge detection and show how this may be used for entanglement swapping and teleportation. The method is also used to generate the Affleck-Kennedy-Lieb-Tasaki ground state, a further resource for quantum computation. We justify, and derive analytic results for, an effective charge-spin Hamiltonian which is valid over a wide range of parameters and agrees well with exact numerical results of a realistic effective-mass model. Our analysis also indicates that the method is robust to the choice of dot-size and initialization errors, as well as decoherence.

Arch Esp Urol ; 55(3): 309-11, 2002 Apr.
Artigo em Espanhol | MEDLINE | ID: mdl-12068763


OBJECTIVE: To report an uncommon case of Fournier's gangrene caused by a perforated retrocecal acute appendicitis that compromised the scrotum and testis. METHODS: Herein we describe a patient that was admitted for abdominal pain localized to the right lower flank and generalized virulent sepsis. RESULTS: Resection of the right inguinal cord and testis was performed. The outcome was poor and the patient died of multiorgan failure. CONCLUSIONS: Fournier's gangrene basically arises from anorectal and urological pathologies, although occasionally it may arise from an intraabdominal source, which should be ruled out especially when the abdominal examination shows interesting findings.

Gangrena de Fournier/complicações , Testículo/patologia , Idoso , Humanos , Masculino , Necrose
La Paz; DIFEM; 1997. 40 p. ilus.
Monografia em Espanhol | LILACS | ID: lil-233388


Esta cartilla educativa pretende mostrar, de la manera más didáctica y accesible posible, los aspectos sobresalientes sobre la Ley del Medio Ambiente y sus reglamentos, para consulta pública, microempresas e incluso a los estudiantes de colegio

Conservação dos Recursos Naturais , Meio Ambiente , Gestão Ambiental , Ecologia Humana , Legislação Ambiental , Bolívia , Normas de Qualidade Ambiental