Finite bounded expanding white hole universe without dark matter

The solution of Einstein's field equations in Cosmological General Relativity (CGR), where the Galaxy is at the center of a finite yet bounded spherically symmetrical isotropic gravitational field, is identical with the unbounded solution. This leads to the conclusion that the Universe may be viewed as a finite expanding white hole. The fact that CGR has been successful in describing the distance modulus verses redshift data of the high-redshift type Ia supernovae means that the data cannot distinguish between unbounded models and those with finite bounded radii of at least $c \tau$. Also it is shown that the Universe is spatially flat at the current epoch and has been at all past epochs where it was matter dominated.Comment: 11 pages, revised versio

Photoassociation spectroscopy of cold calcium atoms

Photoassociation spectroscopy experiments on 40Ca atoms close to the dissociation limit 4s4s 1S0 - 4s4p 1P1 are presented. The vibronic spectrum was measured for detunings of the photoassociation laser ranging from 0.6 GHz to 68 GHz with respect to the atomic resonance. In contrast to previous measurements the rotational splitting of the vibrational lines was fully resolved. Full quantum mechanical numerical simulations of the photoassociation spectrum were performed which allowed us to put constraints on the possible range of the calcium scattering length to between 50 a_0 and 300 a_0

Analysis of shared heritability in common disorders of the brain

Paroxysmal Cerebral Disorder

Como acessar a literatura biomédica e cruzar o "divisor de águas digital" em Pneumologia How to access the biomedical literature and bridge the "Digital Divide" in pulmonology

Em países pobres e subdesenvolvidos, incluindo o Brasil, os pneumologistas têm enormes dificuldades em prover assistência médica de bom nível, em manterem-se em dia e em fazer pesquisa. Um de seus principais problemas é o acesso à literatura médica e científica, com os custos altíssimos e crescentes das assinaturas das revistas biomédicas. A expressão "divisor de águas digital" ("digital divide" em inglês) refere-se ao abismo entre aqueles que podem usar efetivamente as novas tecnologias de informação, como a Internet e aqueles que não tem acesso, tanto dentro dos países como entre os mesmos. Neste trabalho, chamamos a atenção para algumas soluções para esta situação de pobreza em informação, que estão disponíveis na Internet, a baixo ou quase nenhum custo. Em especial o projeto SciELO Brasil, o portal Periódicos CAPES, o PubMed e o projeto HINARI da OMS são detalhados e explicados.<br>In poor and underdeveloped countries, including Brazil, pulmonologists have great difficulty in maintaining a level of service that keeps pace with advances in current knowledge, in keeping up to date with newly developed techniques, and in pursuing research. Due to the rising costs of scientific journal subscriptions, one of the main problems is lack of access to the scientific literature. The term "digital divide" refers to the gap between those who can and those who cannot effectively use new information technology and tools such as the Internet to communicate within and between countries. In this report, we call attention to some solutions to this situation. In particular, the SciELO Project, the CAPES Periodicals portal and the HINARI project, as well as several others, provide access at little or no cost. These options are explained in detail herein