Intermolecular interactions in N-(ferrocenylmethyl)anthracene-9-carboxamide

The title compound, [Fe(C₅H₅)(C₂₁H₁₆NO)], was synthesized from the coupling reaction of anthracene-9-carboxylic acid and ferrocenylmethylamine. The ferrocenyl (Fc) group and the anthracene ring system both lie approximately orthogonal to the amide moiety. An amide-amide interaction (along the a axis) is the principal interaction [N...O = 2.910 (2) Å]. A C-H...π(arene) interaction [C...centroid = 3.573 (2) Å] and a C-H...O interaction [C...O = 3.275 (3) Å] complete the hydrogen bonding; two short (Fc)C...C(anthracene) contacts are also present

Investigação das argamassas antigas de revestimento da Redução Jesuítica Guarani, São Miguel Arcanjo, Brasil

A Redução Guaranítica de São Miguel Arcanjo, um dos sete povos missioneiros que se instalaram no noroeste do estado do Rio Grande do Sul, Brasil, por volta de 1687 no atual sítio, e parte de um dos trinta povos formados pela Companhia de Jesus. Dada a sua relevância histórica para o Brasil, este estudo tem como objetivo principal caracterizar analiticamente a constituição físicoquímica das argamassas originais, que ainda pontualmente são encontradas na Ruína, identificar seus principais materiais constituintes, bem como a existência ou não da cal e a forma com que esta se apresenta. Resultados obtidos, por microscopia eletrônica de varredura (MEV-EDS), difração de raios X (DRX), espectroscopia no infravermelho por transformada de Fourier (FTIR), análise granulométrica e análise por termogravimétrica (TG/DTG) indicam que a fonte principal de aglomerante era a cal. Cal, de origem animal ou pétrea, com a presença da cal calcítica em ambos os conjuntos de amostras. Os estudos mostram a presença da variação do carbonato de cálcio em aragonita nas amostras internas e de hidroxiapatita nas externas. Assim, com base neste estudo, busca-se de modo simplificado facilitar o trabalho de investigação de uma obra de restauro, com a criação de uma rotina básica para conhecimento e caracterização da matéria a ser restaurada se necessário para posterior intervenção

Multiplicação in vitro do guanandi.

Resumo

Qualidade pós-colheita de frutos de tomateiro orgânico, colhidos em diferentes estádios de maturação.

O objetivo desse trabalho foi avaliar as caracteristicas fisico-quimicas que determinam a qualidade do tomate orgânico colhidos em diferentes estádios de maturação de duas cultivares (San Vito e Duradoro).CD-ROM. Suplemento. Trabalho apresentado no 51. Congresso Brasileiro de Olericultura, Viçosa, MG

Polymorphisms in base excision repair genes and thyroid cancer risk

We wish to thank Luisa Manso Oliveira, Lylliane Luz, Silvia Morgado Amaro and Maria Catarina Soveral for technical support. This study was supported by the Center for Research in Human Molecular Genetics (CIGMH), Projects PTDC/SAU-OSM/105572/2008, PTDC/SAU-ESA/102367/2008 and PTDC/QUI/67522/2006 from Fundacao para a Ciencia e Tecnologia (FCT) and Fundacao Calouste Gulbenkian (Grant 76438/2006). The grants to M. Pingarilho (SFRH/BD/22612/2005) from FCT are also acknowledgedThyroid cancer (TC) is the most frequent endocrine malignancy, accounting however for only 1-2\% of all human cancers, and tilt: best-established risk factor for TC is radiation exposure, particularly during childhood. Since the BER pathway seems to play an important role in the repair of DNA damage induced by IR and other genotoxicants, we carried out a hospital-based case-control study in order to evaluate the potential modifying role of 6 BER polymorphisms on the individual susceptibility to non-familial TC in 109 TC patients receiving iodine-131, and 217 controls matched for age ( 2 years), gender and ethnicity. Our results do not reveal a significant involvement of XRCCI Arg194Trp and Arg399Gln, OGGI Ser326Cys, APEXI Asp148Glu, MUTYH Gln335His and,PARPI Val762Ala polymorphisms on the individual susceptibility towards TC, mostly in aggreement with the limited available evidence. By histological stratification analyis, we observed that the association between the presence of heterozygozity in the MUTYH Gln335His polymorphism and TC risk almost reached significance for the papillary subtype of TC. This was the first time that the putative association between this polymorphism and TC susceptibility was evaluated. However, since the sample size was modest, the possibility of a type I error should not be excluded and this result should, therefore, be interpreted with caution. More in depth studies involving larger populations should be pursued in order to further clarify the potential usefulness of the MUTYH Gln335His genotype as a predictive biomarker of susceptibility to TC and the role of the remaining BER polymorphisms on TC susceptibility.publishersversionpublishe

Soroprevalência da infecção por Chlamydophila abortus em pequenos ruminantes explorados na microrregião do Alto Médio Gurguéia, no estado do Piauí, Brasil.

[Chlamydophila abortus infection seroprevalence in small ruminants exploited in the Upper Middle Gurguéia Microregion, State of Piaui, Brazil]. Abstract: Aiming estimate the Chlamydophila abortus seroprevalence in small ruminants at upper middle Gurguéia microregion, 352 sheep and 298 goats serum samples were collected. Complement Fixation test was performed for Chlamydophila sp. diagnosis (OIE, 2000). The reaction was conducted in microplates using test serum dilutions of 1:16 to 1:512. The prevalence in small ruminants was 12.61% (82/650). Therefore, the infectious agent Chlamydophila abortus is present in sheep and goat flocks in microregion of the High Middle Gurguéia in the state of Piauí.Trabalho apresentado nos Anais do VII Congresso Norte Nordeste de Reprodução Anima (CONERA), Mossoró, maio, 2014

Habitat Characteristics of Northern Bobwhite Quail-Hunting Party Encounters: A Landscape Perspective

Landcover data and bobwhite hunting records were used to assess both hunter habitat preferences and the frequency of northern bobwhite encounters by hunting parties in relation to habitat composition during the 1994-1995 and 1995-1996 hunting seasons at the Joseph W. Jones Ecological Research Center in southern Georgia. Patterns of habitat use by hunters, and the frequency of bobwhite encounters varied within and between years, depending on habitat quality, food availability, and other factors. Landscape-scale analyses of standardized bobwhite covey densities (based on coveys pointed in the field) and habitat composition and configuration for the 1994-1995 hunting season revealed that bobwhite densities were: (1) positively associated with the overall percentage agriculture and food plot habitat (reaching a maximum at 30-35% agriculture); and (2) positively associated with edge complexity, and positively associated with agricultural mean patch size [reaching a maximum at 2-3 hectares (5-6 acres)]. Consequently, larger food plots may be more important for increasing bobwhite encounter rates than numerous very small food plots [ \u3c 0.1 hectares (0.25 acres)]. Results of this, and related ongoing studies, have important implications for both landscape design and multiple use resource management. activities in the context of northern bobwhite habitat management in southern upland pine forest ecosystems

Recombinants from the crosses between amphidiploid and cultivated peanut (Arachis hypogaea) for pest-resistance breeding programs.

Peanut is a major oilseed crop worldwide. In the Brazilian peanut production, silvering thrips and red necked peanut worm are the most threatening pests. Resistant varieties are considered an alternative to pest control. Many wild diploid Arachis species have shown resistance to these pests, and these can be used in peanut breeding by obtaining hybrid of A and B genomes and subsequent polyploidization with colchicine, resulting in an AABB amphidiploid. This amphidiploid can be crossed with cultivated peanut (AABB) to provide genes of interest to the cultivar. In this study, the sterile diploid hybrids from A. magna V 13751 and A. kempff-mercadoi V 13250 were treated with colchicine for polyploidization, and the amphidiploids were crossed with A. hypogaea cv. IAC OL 4 to initiate the introgression of the wild genes into the cultivated peanut. The confirmation of the hybridity of the progenies was obtained by: (1) reproductive characterization through viability of pollen, (2) molecular characterization using microsatellite markers and (3) morphological characterization using 61 morphological traits with principal component analysis. The diploid hybrid individual was polyploidized, generating the amphidiploid An 13 (A. magna V 13751 x A. kempff-mercadoi V 13250)4x. Four F1 hybrid plants were obtained from IAC OL 4 × An 13, and 51 F2 seeds were obtained from these F1 plants. Using reproductive, molecular and morphological characterizations, it was possible to distinguish hybrid plants from selfed plants. In the cross between A. hypogaea and the amphidiploid, as the two parents are polyploid, the hybrid progeny and selves had the viability of the pollen grains as high as the parents. This fact turns the use of reproductive characteristics impossible for discriminating, in this case, the hybrid individuals from selfing. The hybrids between A. hypogaea and An 13 will be used in breeding programs seeking pest resistance, being subjected to successive backcrosses until recovering all traits of interest of A. hypogaea, keeping the pest resistance