A influência da nucleobase (uracila, U; citosina, C; adenina, A; guanina, G) nas propriedades físico-químicas e atividades biológicas in vitro dos complexos Sb-ribonucleosídeo foi investigada. Os complexos 1:1 Sb-U e Sb-C foram obtidos no estado sólido e caracterizados por RMN, ESI-MS e análise elementar. As constantes de estabilidade e as constantes aparentes de velocidade de formação e dissoc...

In the present work, we used Cu-Sb alloy system as a model to study grain boundary segregation in specimens prepared by rapid quenching. Ribbons of Cu-Sb alloys of single Cu phase and polycrystalline structure containing 0.01, 0.08, and 2wt% Sb prepared by single roller melt spinning were used as specimens, and the segregation was studied by using energy dispersive X-ray spectrometer attached t...

We evaluated the airway activity of the novel phosphodiesterase type 4 inhibitor SB 207499 [Ariflo; c-4-cyano-4-(3-cyclopentyloxy-4-methoxyp henyl-r-1-cyclohexane carboxylic acid)], in the guinea pig. Ovalbumin (OA)-induced contractions of guinea pig isolated tracheal strips were inhibited by SB 207499 with an EC50 of 1 microM but had little or no effect on exogenous agonist-induced contraction...

orpiment, getchellite and stibnite from zarshuran deposit, nw iran, exhibit extensive as-sb substitution. there are four known minerals along as2s3-sb2s3 join, i.e. orpiment (as2s3), wakabayashilite [(as,sb)20s30], getchellite (assbs3) and stibnite (sb2s3). extensive mineralogical studies by scanning electron microscope (sem) and electron probe micro-analyzer (epma) indicate that getchellite fr...

The electronic and geometric structures of the clean a,nd Sb terminated Si(lOO)2x1 and Ge(lOO)-2x1 surfaaces have been investigated using a multi-technique approach. Low energy electron diffraction (LEED), scanning tunneling microscopy (STM), surface extended X-ray absorption fine structure (SEXAFS) spectroscopy and angle-integrated core-level photoemission electron spectroscopy (PES) were empl...

The Helium Cooled Pebble Bed (HCPB) breeding blanket, being developed by the Karlsruhe Institute of Technology (KIT) and its partners is one two driver blanket candidates to be selected for European demonstration fusion power plant (EU DEMO). in-box Loss Coolant Accident (LOCA) a postulated initiating event (BB) that must accounted within design basis. In this paper, BB cap region analyzed abil...

Five new histocompatibility antigens, designated secondary B cell or (SB) antigens, have been identified by secondary allogeneic proliferative and cytotoxic responses. The reagents used to define the SB antigents are lymphocytes primed between donors matched for all known HLA antigens. The SB antigens stimulate weak primary allogeneic proliferative responses (a mean relative response of 8%) but...

OBJECTIVES This study sought to investigate the mechanism of restenosis and the predictive value of post-procedural minimum stent area (MSA) in the side branch (SB) after coronary bifurcation stenting. BACKGROUND The mechanism of restenosis, especially at the SB ostium, has not been fully elucidated. METHODS This study examined 73 bifurcation lesions with post-procedural and 9-month follow-...

BACKGROUND A National Spina Bifida Patient Registry (NSBPR) was begun in 2009 to help understand the natural history of spina bifida (SB) and the effects of treatments provided by SB clinics. We used the NSBPR to explore the relationship of sociodemographic characteristics with SB outcomes. METHODS Using NSBPR data collected in 2009 to 2012, we examined the unadjusted association between demo...

Microbes have great potential for arsenic (As) and antimony (Sb) bioremediation in heavily contaminated soil because they have the ability to biotransform As and Sb to species that have less toxicity or are more easily removed. In this study, we integrated a metagenomic method with physicochemical characterization to elucidate the composition of microbial community and functional genes (related...