7,639 research outputs found

    Preços e conjuntura do café 1996-2006.

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    O estudo compila e analisa informaçÔes conjunturais do mercado brasileiro de cafĂ© na Ășltima dĂ©cada. Enfatiza o otimismo do mercado, pela reorganização da economia cafeeira brasileira que incentiva a regionalização, desperta o associativismo entre os agentes da cadeia produtiva. Preocupação com o controle de custos, qualidade, prioridade ao consumidor e competitividade, em todos os segmentos, crescimento do mercado interno constituem caracterĂ­sticas marcantes do setor, nessa dĂ©cada

    Sustentabilidade na cafeicultura brasileira, uma anålise em talhÔes de produção.

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    InformaçÔes de uma amostra de 90 propriedades, em regiĂ”es cafeeiras, permitiram inferir quanto a indicadores de eficiĂȘncia, expressos em produtividades e em prĂĄticas de cultivo. Esses indicadores poderĂŁo ser utilizados como linha de base para anĂĄlises longitudinais da produção integrada de cafĂ©. InferĂȘncias quanto aos impactos de tecnologias de cultivo na propriedade como um todo foram tambĂ©m avaliadas em talhĂ”es de produção de cafĂ©. Neste estudo, observou-se que existe considerĂĄvel variabilidade entre talhĂ”es em relação a formas de condução da atividade cafeeira, idade e adensamento das plantas, tecnologias na implantação e cultivares. Conclui-se pela necessidade de nĂŁo apenas analisar o conjunto das propriedades, mas as especificidades internas de cada talhĂŁo, permitindo comparaçÔes para melhor gestĂŁo das operaçÔes

    OcorrĂȘncia e cultivares de bananeiras preferenciais da broca-gigante (Castnia licus) em RondĂŽnia.

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    Avaliou-se as cultivares de bananeiras existentes no Campo Experimental de Porto Velho, com o objetivo de verificar a infestação pela praga Castnia licus, ordinariamente chamada de broca-gigante.bitstream/item/42534/1/Cot292-bananeira.pd

    Pressurized Intraperitoneal Aerosol Chemotherapy Enhanced by Electrostatic Precipitation (ePIPAC) for Patients with Peritoneal Metastases.

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    Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a new mode of intraperitoneal chemotherapy administration that can potentially be improved by the addition of electrostatic precipitation (ePIPAC). This study aimed to describe the procedural details of ePIPAC and to analyze its safety for patients with nonresectable peritoneal metastasis as well as their tolerance and response to this treatment. This retrospective cohort study included consecutive patients treated with ePIPAC in three centers from April 2019 to April 2020. The toxicities of each patient were assessed using the Common Terminology Criteria for Adverse Events (CTCAE). Complications were documented according to the Clavien classification. Quality of life (QoL) was assessed using EORTC-QLQ-C30, and the peritoneal regression grading score (PRGS) was used to grade histologic responses. Further surrogates for responses were the Peritoneal Cancer Index (PCI), ascites, and symptoms. Overall, 69 patients received 147 ePIPACs with oxaliplatin (n = 34) or cisplatin/doxorubicin (n = 35) mainly for colorectal (n = 25), ovarian (n = 14), and gastric (n = 13) primary cancers. Systemic chemotherapy was used in the treatment of 54 patients (76%). The median electrostatic therapy time was 12 min (range 6-30 min). The overall and major CTCAE toxicity rates were respectively 24.6% and 15.9%. The postoperative complications rate according to Clavien classification was 4.7%. The responses of 22 patients who had three or more ePIPAC treatments were evaluated as follows: PCI (16 vs 14; p = 0.4), ascites (320 vs 98 ml; p = 0.1), and PRGS (2.23 vs 1.73; p = 0.15). The complete (PRGS1) and major (PRGS2) histologic responses at the third ePIPAC were respectively 38.5% and 53.8%. Overall QoL was stable during the first ePIPACs. Repetitive ePIPACs were safe and well tolerated for patients with unresectable peritoneal metastasis

    SBR performance for synthetic and fishery wastewater treatment

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    The evaluation of a SBR performance treating synthetic and fishery wastewater was performed. Without salt addition, COD and ammonia removal rates over than 50% were obtained, indicating the occurrence of the first nitrification step and COD removal. With 0.5% salt, removal rates lower than 60% were attained, for ammonia removal efficiency probably due to ionic strength changes and cellular plasmolysis leading to inactivation of the nitrification organisms. The SBR performance was greater for synthetic wastewater, due to the inherent and controlled characteristics. For both, lower SVI were achieved as a valuable indicator towards the assessment of the aggregated biomass structure.National Council of Scientific and Technological Development of Brazil (CNPq); BIEURAM III ALFA co-operation project (European Commission)

    Matter collineations of Spacetime Homogeneous G\"odel-type Metrics

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    The spacetime homogeneous G\"odel-type spacetimes which have four classes of metrics are studied according to their matter collineations. The obtained results are compared with Killing vectors and Ricci collineations. It is found that these spacetimes have infinite number of matter collineations in degenerate case, i.e. det(Tab)=0(T_{ab}) = 0, and do not admit proper matter collineations in non-degenerate case, i.e. det(Tab)≠0(T_{ab}) \ne 0. The degenerate case has the new constraints on the parameters mm and ww which characterize the causality features of the G\"odel-type spacetimes.Comment: 12 pages, LaTex, no figures, Class. Quantum.Grav.20 (2003) 216

    Neonatal pyruvate dehydrogenase deficiency due to a R302H mutation in the PDHA1 gene: MRI findings

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    Pyruvate dehydrogenase (PDH) deficiency is one of the most common causes of congenital lactic acidosis. Correlations between the genetic defect and neuroimaging findings are lacking. We present conventional and diffusion-weighted MRI findings in a 7-day-old male neonate with PDH deficiency due to a mosaicism for the R302H mutation in the PDHA1 gene. Corpus callosum dysgenesis, widespread increased diffusion in the white matter, and bilateral subependymal cysts were the main features. Although confirmation of PDH deficiency depends on specialized biochemical analyses, neonatal MRI plays a role in evaluating the pattern and extent of brain damage, and potentially in early diagnosis and clinical decision making

    Prevalence of noncarious cervical lesions among adults:a systematic review

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    Objectives: This study aims to systematically review the literature on noncarious cervical lesions (NCCLs) and calculate an overall prevalence estimate. Methods: The protocol of this systematic review was prepared according to PRISMA and MOOSE guidelines. The MEDLINE-PubMed and Cochrane-CENTRAL databases were searched. Relevant published papers that provided information regarding the prevalence or number of NCCLs among general or specific populations were included. Results: The initial search identified 569 titles and abstracts, 24 of which met the eligibility criteria involving 14,628 participants. The weighted mean prevalence of NCCLs among the whole studied population was 46.7 % (95 % CI: 38.2; 55.3 %), ranging from 9.1%–93%. Based on sub-analyses, studies with populations older than 30 years revealed higher weighted prevalence (53 %) than those with populations younger than 30 years (43 %). Regarding the diagnostic method, when visual or tactile clinical examination was used, the prevalence was lower than when the Smith and Knight tooth wear index was used. When different definitions were used, the weighted mean prevalence varied from 28 % to 62 %. As to the terms used to address the lesions, the prevalence was higher when “noncarious cervical lesion” was used and lower when “root defects,” “abrasion,” or “abfraction” were used. When geographical regions were compared, South America had the highest reported prevalence of NCCLs, while the United States had the lowest. Moreover, general populations presented the highest prevalence, slightly higher than dental populations, whose members frequented dental practices. Conclusion: The overall prevalence of NCCLs was 46.7 % and higher in older populations. Visual and tactile clinical examination underestimate this prevalence compared to the established index. The terms and definitions used also influenced the prevalence data. Distinct geographical differences were observed, and general populations were more inclined to present NCCLs
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