Luminous Infrared Galaxies with the Submillimeter Array: II. Comparing the CO(3-2) Sizes and Luminosities of Local and High-Redshift Luminous Infrared Galaxies

We present a detailed comparison of the CO(3-2) emitting molecular gas between a local sample of luminous infrared galaxies (U/LIRGs) and a high redshift sample that comprises submm selected galaxies (SMGs), quasars, and Lyman Break Galaxies (LBGs). The U/LIRG sample consists of our recent CO(3-2) survey using the Submillimeter Array while the CO(3-2) data for the high redshift population are obtained from the literature. We find that the L(CO(3-2)) and L(FIR) relation is correlated over five orders of magnitude, which suggests that the molecular gas traced in CO(3-2) emission is a robust tracer of dusty star formation activity. The near unity slope of 0.93 +/- 0.03 obtained from a fit to this relation suggests that the star formation efficiency is constant to within a factor of two across different types of galaxies residing in vastly different epochs. The CO(3-2) size measurements suggest that the molecular gas disks in local U/LIRGs (0.3 - 3.1 kpc) are much more compact than the SMGs (3 - 16 kpc), and that the size scales of SMGs are comparable to the nuclear separation (5 - 40 kpc) of the widely separated nuclei of U/LIRGs in our sample. We argue from these results that the SMGs studied here are predominantly intermediate stage mergers, and that the wider line-widths arise from the violent merger of two massive gas-rich galaxies taking place deep in a massive halo potential.Comment: 16 pages, 5 figures, ApJ Accepte

Proteasome inhibition for treatment of leishmaniasis, Chagas disease and sleeping sickness

Chagas disease, leishmaniasis and sleeping sickness affect 20 million people worldwide and lead to more than 50,000 deaths annually. The diseases are caused by infection with the kinetoplastid parasites Trypanosoma cruzi, Leishmania spp. and Trypanosoma brucei spp., respectively. These parasites have similar biology and genomic sequence, suggesting that all three diseases could be cured with drugs that modulate the activity of a conserved parasite target. However, no such molecular targets or broad spectrum drugs have been identified to date. Here we describe a selective inhibitor of the kinetoplastid proteasome (GNF6702) with unprecedented in vivo efficacy, which cleared parasites from mice in all three models of infection. GNF6702 inhibits the kinetoplastid proteasome through a non-competitive mechanism, does not inhibit the mammalian proteasome or growth of mammalian cells, and is well-tolerated in mice. Our data provide genetic and chemical validation of the parasite proteasome as a promising therapeutic target for treatment of kinetoplastid infections, and underscore the possibility of developing a single class of drugs for these neglected diseases

Overview of the coordinated ground-based observations of Titan during the Huygens mission

Coordinated ground-based observations of Titan were performed around or during the Huygens atmospheric probe mission at Titan on 14 January 2005, connecting the momentary in situ observations by the probe with the synoptic coverage provided by continuing ground-based programs. These observations consisted of three different categories: (1) radio telescope tracking of the Huygens signal at 2040 MHz, (2) observations of the atmosphere and surface of Titan, and (3) attempts to observe radiation emitted during the Huygens Probe entry into Titan's atmosphere. The Probe radio signal was successfully acquired by a network of terrestrial telescopes, recovering a vertical profile of wind speed in Titan's atmosphere from 140 km altitude down to the surface. Ground-based observations brought new information on atmosphere and surface properties of the largest Satumian moon. No positive detection of phenomena associated with the Probe entry was reported. This paper reviews all these measurements and highlights the achieved results. The ground-based observations, both radio and optical, are of fundamental imnortance for the interpretatinn of results from the Huygens mission

Cyanobacterial lipopolysaccharides and human health – a review

Cyanobacterial lipopolysaccharide/s (LPS) are frequently cited in the cyanobacteria literature as toxins responsible for a variety of heath effects in humans, from skin rashes to gastrointestinal, respiratory and allergic reactions. The attribution of toxic properties to cyanobacterial LPS dates from the 1970s, when it was thought that lipid A, the toxic moiety of LPS, was structurally and functionally conserved across all Gram-negative bacteria. However, more recent research has shown that this is not the case, and lipid A structures are now known to be very different, expressing properties ranging from LPS agonists, through weak endotoxicity to LPS antagonists. Although cyanobacterial LPS is widely cited as a putative toxin, most of the small number of formal research reports describe cyanobacterial LPS as weakly toxic compared to LPS from the Enterobacteriaceae. We systematically reviewed the literature on cyanobacterial LPS, and also examined the much lager body of literature relating to heterotrophic bacterial LPS and the atypical lipid A structures of some photosynthetic bacteria. While the literature on the biological activity of heterotrophic bacterial LPS is overwhelmingly large and therefore difficult to review for the purposes of exclusion, we were unable to find a convincing body of evidence to suggest that heterotrophic bacterial LPS, in the absence of other virulence factors, is responsible for acute gastrointestinal, dermatological or allergic reactions via natural exposure routes in humans. There is a danger that initial speculation about cyanobacterial LPS may evolve into orthodoxy without basis in research findings. No cyanobacterial lipid A structures have been described and published to date, so a recommendation is made that cyanobacteriologists should not continue to attribute such a diverse range of clinical symptoms to cyanobacterial LPS without research confirmation

Constitutional Law: A Contemporary Approach

The third edition of the casebook, which is suitable either for a one- or two-semester course, strives to make constitutional law easily teachable and readily accessible for students. The authors have selected the cases very carefully and provided extensive excerpts of the opinions so that students get a good sense of the Court\u27s reasoning. Text boxes call the students\u27 attention to important aspects of each opinion, and the book is filled with introductions, points for discussion, hypotheticals, and executive summaries. The authors present a diversity of views on every subject, and, reflecting some of their own disagreements, the authors have written point-counterpoint discussions on many disputed questions

Estudos sobre transtornos de personalidade Antissocial e Borderline Estudios sobre trastornos de personalidad Anti-social y Borderline Studies of personality disorders Antisocial and Borderline

OBJETIVO: Este estudo objetivou revisar, na literatura, os critérios diagnósticos e as intervenções nos transtornos de personalidade do tipo Antissocial e Borderline. MÉTODOS: Uma pesquisa manual foi realizada no acervo bibliográfico particular do autor, selecionando-se 12 referências; outra pesquisa sistematizada foi desenvolvida no período de 1990 a 2008, no mês de janeiro de 2009, na Biblioteca Virtual em Saúde, selecionando-se 23 artigos. RESULTADOS: Os achados indicaram duas abordagens - uma que classifica como doença, mas que necessita de revisão dos critérios diagnósticos e avaliação e a segunda, que classifica como problemas morais. CONCLUSÃO: Independente da abordagem é necessário que o enfermeiro aprimore seu conhecimento e compreenda a dificuldade desse sujeito ao relacionar-se adequadamente com outras pessoas; assim, é de fundamental importância que os membros da equipe de saúde analisem seus sentimentos, atitudes e reações em relação ao comportamento do cliente, uma vez que a relação com esta clientela é considerada uma das mais complexas em saúde mental.<br>OBJETIVO: Este estudio tuvo por objetivo revisar, en la literatura, los criterios diagnósticos y las intervenciones en los trastornos de personalidad del tipo Anti-social y Borderline. MÉTODOS: Se trata de una investigación manual que fue realizada en el acervo bibliográfico particular del autor, seleccionando 12 referencias; otra investigación sistematizada fue desarrollada en el período de 1990 a 2008, en el mes de enero de 2009, en la Biblioteca Virtual en Salud, seleccionándose 23 artículos. RESULTADOS: Los hallazgos indicaron dos abordajes - uno que los clasifica como enfermedad, pero que necesita de revisión de los criterios diagnósticos y de evaluación, y la segunda, que los clasifica como problemas morales. CONCLUSIÓN: Independientemente del abordaje es necesario que el enfermero perfeccione su conocimiento y comprenda la dificultad de ese sujeto para relacionarse adecuadamente con otras personas; así, es de fundamental importancia que los miembros del equipo de salud analicen sus sentimientos, actitudes e reacciones en relación al comportamiento del cliente, una vez que la relación con esta clientela es considerada una de las más complejas en salud mental.<br>OBJECTIVE: This study had the objective of reviewing, in the literature, the diagnostic criteria and the intervention in personality disorders, Antisocial and Borderline types. METHODS: A manual research was performed in the author's private collection of books, selecting 12 references; other research has been systematically developed in the period 1990-2008, in January 2009, in the Virtual Health Library, selecting 23 papers. RESULTS: Our findings indicated two approaches - one that classifies as an illness, but that needs to review the diagnostic criteria and evaluation, and the second, that classifies them as moral problems. CONCLUSION: Regardless the type of approach, is necessary that nurses enhance their knowledge and understand the difficulty of this subject to relate properly with others; thus, it is crucial that members of the healthcare team examine their feelings, attitudes and reactions related to the client's behavior, since the relationship with this type of customer is considered one of the most complex in the mental health field