Scale insects (Hemiptera: Coccoidea) of ornamental plants from Sao Carlos, Sao Paulo, Brazil

A list of 35 scale insects collected from 72 ornamental plant species in Sao Carlos, Sao Paulo, Brazil is provided. Regarding host specificity, 30 scale insects were polyphagous, 4 oligophagous, and 1 monophagous. A total of 102 coccoid/plant associations are recorded, 29 of which are new host records for the species; 60 are new host records for the species in Brazil. Pulvinaria urbicola Cockerell, 1893 (Coccidae), Phenacoccus similis Granara de Willink, 1983 (Pseudococcidae), and Orthezia molinarii (Morrison, 1952) (Ortheziidae) are recorded for the first time in Brazil. In addition, we describe the injury caused by scale insects on ornamental plants

Photochemical studies of cis-[Ru(bpy)2(4-bzpy)(CO)](PF6)2 and cis-[Ru(bpy)2(4-bzpy)(Cl)](PF6): Blue light-induced nucleobase binding.

The ruthenium(II) compounds cis-[Ru(bpy)2(4-bzpy)(CO)](PF6)2 (I) and cis-[Ru(bpy)2(4-bzpy)(Cl)](PF6) (II) (4-bzpy=4-benzoylpyridine, bpy=2,2'-bipyridine) were synthesized and characterized by spectroscopic and electrochemical techniques. The crystal structure of II was determined by X-ray diffraction. The photochemical behavior of I in aqueous solution shows that irradiation with ultraviolet light (365nm) releases both CO and 4-bzpy leading to the formation of the cis-[Ru(bpy)2(H2O)2]2+ ion as identified by NMR and electronic spectroscopy. Carbon monoxide release was confirmed with the myoglobin method and by gas chromatographic analysis of the headspace. CO release was not observed when aqueous I was irradiated with blue light (453nm). Changes in the electronic and 1H NMR spectra indicate that I undergoes photoaquation of 4-bzpy to form cis-[Ru(bpy)2(CO)(H2O)]2+. Blue light irradiation of aqueous II released the coordinated 4-bzpy to give the cis-[Ru(bpy)2(H2O)(Cl)]2+ ion. When the latter reaction was carried out in the presence of the nucleobase guanine, Ru-guanine adducts were formed, indicating that the metal containing photoproduct may also participate in biologically relevant reactions. The photochemical behavior of I indicates that it can release either CO or 4-bzpy depending on the wavelength chosen, a feature that may have therapeutic application

Desenho preliminar de uma coleção nuclear de mandioca dentro do banco ativo de germoplasma da Embrapa Amazônia Ocidental.

A mandioca (Manihot esculenta Crantz) destaca-se como um dos cultivos mais importantes na Amazônia, tanto para a segurança alimentar regional como no comércio. A Embrapa Amazônia Ocidental organizou um Banco Ativo de Germoplasma (BAG) para fins de melhoramento e conservação in vivo da variabilidade genética da mandioca, por meio da coleta de germoplasma em diferentes localidades no Estado do Amazonas, visando reunir a diversidade encontrada na região amazônica. O objetivo deste trabalho foi desenhar uma coleção nuclear de mandioca com base em dados geográficos, morfo-agronômicos e genético-moleculares. Decidiu-se que a Coleção Nuclear deveria conter 50 amostras, representando 15% do BAG e serão representadas por acessos coletados nas calhas dos principais rios Negro, Solimões, Purus, Amazonas e Madeira. As localidades super-representadas no BAG serão alocadas à CN logaritmicamente, enquanto que as localidades sub-representadas serão alocadas proporcionalmente. As amostras selecionadas para a Coleção devem possuir boa produtividade (>13,3 t/há), raízes com polpa de coloração amarelada, teores de HCN acima de 100 mg/kg e divergência genético-moleculares satisfatórias

Standard map in magnetized relativistic systems: fixed points and regular acceleration

We investigate the concept of a standard map for the interaction of relativistic particles and electrostatic waves of arbitrary amplitudes, under the action of external magnetic fields. The map is adequate for physical settings where waves and particles interact impulsively, and allows for a series of analytical result to be exactly obtained. Unlike the traditional form of the standard map, the present map is nonlinear in the wave amplitude and displays a series of peculiar properties. Among these properties we discuss the relation involving fixed points of the maps and accelerator regimes.Comment: Work to appear in Phys. Rev. E. 2 figure

Environmental Epidemiology of Intestinal Schistosomiasis in Uganda: Population Dynamics of Biomphalaria (Gastropoda: Planorbidae) in Lake Albert and Lake Victoria with Observations on Natural Infections with Digenetic Trematodes

This study documented the population dynamics of Biomphalaria and associated natural infections with digenetic trematodes, along the shores of Lake Albert and Lake Victoria, recording local physicochemical factors. Over a two-and-a-half-year study period with monthly sampling, physicochemical factors were measured at 12 survey sites and all freshwater snails were collected. Retained Biomphalaria were subsequently monitored in laboratory aquaria for shedding trematode cercariae, which were classified as either human infective (Schistosoma mansoni) or nonhuman infective. The population dynamics of Biomphalaria differed by location and by lake and had positive relationship with pH (P < 0.001) in both lakes and negative relationship with conductivity (P = 0.04) in Lake Albert. Of the Biomphalaria collected in Lake Albert (N = 6,183), 8.9% were infected with digenetic trematodes of which 15.8% were shedding S. mansoni cercariae and 84.2% with nonhuman infective cercariae. In Lake Victoria, 2.1% of collected Biomphalaria (N = 13,172) were infected with digenetic trematodes with 13.9% shedding S. mansoni cercariae, 85.7% shedding nonhuman infective cercariae, and 0.4% of infected snails shedding both types of cercariae. Upon morphological identification, species of Biomphalaria infected included B. sudanica, B. pfeifferi, and B. stanleyi in Lake Albert and B. sudanica, B. pfeifferi, and B. choanomphala in Lake Victoria. The study found the physicochemical factors that influenced Biomphalaria population and infections. The number and extent of snails shedding S. mansoni cercariae illustrate the high risk of transmission within these lake settings. For better control of this disease, greater effort should be placed on reducing environmental contamination by improvement of local water sanitation and hygiene

Complications of endoscopic nasosinusal surgery – Review of 667 patients from the Centro Hospitalar do Porto

Objectivos: Determinar a taxa de complicações da cirurgia endoscópica nasossinusal (CENS) num centro hospitalar com 20 anos de experiência nesta área. Desenho do estudo: Estudo retrospectivo de 667 pacientes submetidos a CENS. Material e Métodos: Foram analisados os dados relativos aos pacientes submetidos a CENS desde Janeiro de 2006 a Dezembro de 2009, e avaliadas as complicações da técnica cirúrgica no per e pós--operatório, com um período mínimo de follow-up de 3 meses. Resultados: Num total de 677 cirurgias, verificou-se uma taxa de 7,39% de complicações (5,91% minor e 1,48% major). As complicações da CENS variaram de acordo com a extensão do procedimento cirúrgico, sendo mais frequentes nos casos de cirurgia de revisão, estando também relacionadas com a presença e grau de polipose nasossinusal. Conclusões: Duas décadas após a afirmação da CENS, esta ainda está associada a complicações. É fundamental um conhecimento anatómico profundo e um planeamento cirúrgico detalhado, baseado na análise imagiológica rigorosa, para que estas sejam reduzidas ao mínimo.info:eu-repo/semantics/publishedVersio