Vortex-Antivortex Lattice in Ultra-Cold Fermi Gases

We discuss ultra-cold Fermi gases in two dimensions, which could be realized in a strongly confining one-dimensional optical lattice. We obtain the temperature versus effective interaction phase diagram for an s-wave superfluid and show that, below a certain critical temperature T_c, spontaneous vortex-antivortex pairs appear for all coupling strengths. In addition, we show that the evolution from weak to strong coupling is smooth, and that the system forms a square vortex-antivortex lattice at a lower critical temperature T_M.Comment: Submitted to Physical Review Letter

Why business angels reject investment opportunities: Is it personal?

A major focus of research on business angels has examined their decision-making processes and investment criteria. As business angels reject most of the opportunities that they receive, this article explores the reasons informing such decisions. In view of angel heterogeneity, investment opportunities might be expected to be rejected for differing reasons. Two sources of data are used to examine this issue. Face-to-face interviews with 30 business angels in Scotland and Northern Ireland provided information on typical ‘deal killers’. This was complemented by an Internet survey of United Kingdom that attracted responses from 238 UK business angels. The findings confirm that the main reason for rejection relates to the entrepreneur/management team. However, angel characteristics do not explain the number of reasons given for opportunity rejection nor do they predict the reasons for rejecting investment opportunities. This could be related to the increasing trend for business angels to join organised groups which, in turn, leads to the development of a shared repertoire of investment approaches. We suggest the concept of ‘communities-of-practice’ as an explanation for this finding

Resíduos da agroindústria do dendê: caracterização e equivalência em fertilizantes.

bitstream/item/57410/1/CPATU-BP198.pd

Composição química dos subprodutos da agroindústria do dendê.

SUBPRODUTOS DO DENDÊ; Cachos vazios, engaços ou vassouras; Efluente natural; CONHEÇA OS OUTROS SUBPRODUTOS DA AGROINDÚSTRIA DO DENDÊ; Efluente centrifugado ? Fase líquida; Efluente centrifugado ? Fase sólida; Fibra de polpa; APROVEITE OS SUBPRODUTOS DA AGROINDÚSTRIA DO DENDÊ NA ADUBAÇÃO DE SUA LAVOURA; Adubação; Composição química; OBSERVE A COMPOSIÇÃO QUÍMICA DO CACHO VAZIO; AVALIE AGORA O QUANTO EQUIVALE UMA TONELADA DE CACHOS VAZIOS EM ADUBO QUÍMICO; EXAMINE E COMPARE QUE O CACHO VAZIO, MESMO DEPOIS DE LAVADO PELA CHUVA, NÃO PERDE NUTRIENTES; VERIFIQUE AGORA A QUANTO EQUIVALE UMA TONELADA DE CACHOS VAZIOS LAVADOS, EM ADUBO QUÍMICO; A FIBRA DA POLPA DO DENDÊ É RICA EM NUTRIENTES. OBSERVE; AGORA CONFIRA A QUANTO EQUIVALE UMA TONELADA DA FIBRA DA POLPA DO DENDÊ, EM ADUBO QUÍMICO; O EFLUENTE NATURAL TAMBÉM É BASTANTE RICO EM NUTRIENTES. VERIFIQUE; SAIBA AGORA QUANTO UM METRO CÚBICO DE EFLUENTE NATURAL EQUIVALE EM ADUBO QUÍMICO; O EFLUENTE CENTRIFUGADO TAMBÉM CONTÉM MUITOS NUTRIENTES. AVALIE; VEJA A QUANTO EQUIVALE UM METRO CÚBICO OU UMA TONELADA DE EFLUENTE CENTRIFUGADO EM ADUBO QUÍMICObitstream/item/61201/1/CPATU-Doc119.pd

Expression of angiogenic and inflammation markers in murine schistosomiasis mansoni

Aim: to study angiogenesis in the livers of mice infected with S. mansoni.N/

Could Estradiol be used as a biomarker of infection in Schistosoma haematobium infected patients?

Urogenital schistosomiasis is a chronic infection caused by the human blood fluke Schistosoma haematobium. Schistosomiasis haematobia is a known risk factor for cancer leading to squamous cell carcinoma of the urinary bladder (SCC). This is a neglected tropical disease endemic in many countries of Africa and the Middle East. Schistosome eggs produce catechol-estrogens. These estrogenic molecules are metabolized to active quinones that cause alterations in DNA (leading in other contexts to breast or thyroid cancer). Our group has shown that schistosome egg associated catechol estrogens induce tumor-like phenotypes in urothelial cells, originated from parasite estrogen-host cell chromosomal DNA adducts and mutations. Also we have demonstrated that these molecules are detected as Estradiol in sera of infected patients.N/

Biodistribuição do 18FDG em ratos nude balb-c nu/nu normaiS

Resumo do poster apresentado ao XII Congresso Nacional de Medicina Nuclear, 12-14 Novembro 2009, Mealhad