5,059 research outputs found
Radiative recombination data for modeling dynamic finite-density plasmas
No full textWe have calculated partial final-state resolved radiative recombination (RR) rate coefficients from the initial ground and metastable levels of all elements up to and including Zn, plus Kr, Mo, and Xe, for all isoelectronic sequences up to Na-like forming Mg-like. The data are archived according to the Atomic Data and Analysis Structure (ADAS) data class adf48, which spans a temperature range of z2(101-107) K, where z is the initial ion charge. Fits to total rate coefficients have been determined, for both the ground and metastable levels, and those for the ground are presented here. Comparison is made both with previous RR rate coefficients and with (background) R-matrix photoionization cross sections. This RR database complements a dielectronic recombination (DR) database already produced, and both are being used to produce updated ionization balances for both (electron) collisionally ionized and photoionized plasmas
5-FU for genital warts in non-immunocompromised individuals
No full textContexto; O condiloma acuminado e uma das formas mais comuns de Doenca Sexualmente Transmissivel (DST) e, como tal, um problema de Saúde Publica devido a associacao de Papillomavirus humano (HPV) com o cancer do colo uterino. A busca de um tratamento clinico efetivo, seguro, de baixo custo e auto-administrado deve ser procurada como forma de se multiplicar acoes no sentido de controlar esta DST. Objetivos: Avaliar a efetividade e seguranca do 5-Fluorouracil topico no tratamento do condiloma acuminado genital em individuos nao imunocomprometidos. Metodos: Revisao sistematica da Literatura com meta-analise de ensaio clinicos randomisados (RCT) segundo a metodologia da COLABORACAO COCHRANE. As bases de dados LILACS, referencias bibliograficas de estudos e anais de congressos. A qualidade dos estudos foi avaliada pelos criterios do Cochrane Handbook sendo incluidos somente estudos A e B pelos criterios de Schulz. Foram incluidos homens e mulheres com idade igual ou superior a 18 anos, com condiloma genital clinico ou subclinico. As intervencoes avaliadas foram 5-FU (0,5, 1%, 5%) versus placebo; 5-FU 5% versus Acido Metacresolsulfonico; 5-FU 5% versus Podofilina (2%, 4% e 25%); 5-FU 5% versus Laser de CO2; 5-FU 5% versus 5-FU 5% + Interferon α- 2a (baixa dose); 5-FU 5% versus + Interferon α- 2a (alta dose); 5-FU 5% versus 5-FU 5% + Laser de CO2 + Interferon α- 2a (alta dose); Laser de CO2 versus Laser de CO2 + 5-FU 5% e os desfechos foram cura, efeitos colaterais, falha ou resistencia ao tratamento, recorrencia da lesao e resposta parcial / melhora da lesao. Resultados: Foram encontrados 6 estudos , com 988 pacientes, 645 mulheres e 343 homens e 8 intervencoes. Dois estudos relataram perdas, mas, nenhum mencionou analise por intencao de tratar (ITT). 5-FU mostrou melhor resultado para cura que placebo ou nao tratamento [RR 0.39 (95% IC 0.23 a 0.67)], MCSA [RR 22.1 (95% IC 0.83 a 5.37)], e Podofilina 2%, 4% ou 25% [RR 1.26 (95% IC 0.86 a 1.82)]. Nao houve diferenca estatistica para falha do tratamento para 5-FU versus CO2 Laser [RR 0.69 (95% IC 0.43 a 1.11)], 5-FU + INFα-2a (baixa dose) [RR 1.02 (95% IC 0.87 a 1.119)]. O 5-FU mostrou pior resultado comparado com 5-FU + INFα-2a (alta dose) [RR 10.78 (95% IC 1.50 a 77.36)] e 5-FU + CO2 Laser INFα-2a (alta dose) [RR 7.97 (95% IC 2.87 a 22.13)]. Conclusao: Os estudos revisados sao heterogeneos em metodos e qualidade, e suas evidencias fracas, as taxas de cura sao variaveis e, embora, o 5-FU isolado tenha mostrado pior resultado que o 5-FU + INF α-2a (alta dose) e 5-FU + CO2 + INF α-2a (alta dose) entendemos que isto nao seja suficiente para descarta-lo como opcao de tratamento. Evidencias, ainda que pequenas, mostram que o tratamento topico de condiloma genital com 5-FU topico tem algum efeito terapeutico e, a despeito da pequena amostra e da heterogeneidade dos estudos , pode ser efetivo e seguro para tratamento do condiloma genital em casos selecionados num meio pobre como nossoBV UNIFESP: Teses e dissertaçõe
5-FU for genital warts in non-immunocompromised individuals
No full textBackgroundGenital warts are common and usually are harmless but can be painful and psychologically burdensome. Several local treatments can be used, including topical 5-Fluorouracil (5-FU).ObjectivesTo determine the effectiveness and safety of 5-FU topical treatment for genital warts in nonimmunocompromised individuals.Search strategyDatabases searched were Cochrane Central Register of Controlled Trials (The Cochrane Library 2009 Issue 3), MEDLINE (1966 to August 2009), EMBASE (until August 2009), LILACS (1982 to August 2009). the search had no language or publication restrictions.Selection criteriaThe review included randomised controlled trials (RCTs) among women, men, or both sexes, aged 18 years and older, comparing: 5-FU versus placebo or no treatment; 5-FU in any dose versus other isolated treatment, topical or systemic; 5-FU in any dose associated with other treatment versus placebo; 5-FU in any dose associated with other treatment versus other isolated treatment, topical or systemic; 5-FU in any dose associated with other treatment versus other associated treatment, topical or systemic.Data collection and analysisTwo authors independently assessed trial quality and extracted data from the original publications.Main resultsSix trials involving 988 patients (645 women and 343 men) and reporting eight comparisons were found. Two studies reported withdrawals and dropouts, but none mentioned analysis by intention to treat (ITT). 5-FU presented better results for cure than placebo or no treatment (relative risk (RR) 0.39, 95% confidence interval (CI) 0.23 to 0.67), meta-cresol-sulfonic acid (MCSA) (RR 2.11, 95% CI 0.83 to 5.37), Podophylin 2%, 4% or 25% (RR 1.26, 95% CI 0.86 to 1.82). There were no statistical differences for treatment failure for 5-FU versus CO2 Laser (RR 0.69, 95% CI 0.43 to 1.11) versus 5-FU + INF alpha-2a (low dose) (RR 1.02, 95% CI 0.87 to 1.119). Worse results were found for 5-FU versus 5-FU + INF alpha-2a (high dose) (RR 10.78, 95% CI 1.50 to 77.36), and 5-FU + CO2 Laser INF alpha-2a (high dose) (RR 7.97, 95% CI 2.87 to 22.13).Authors' conclusionsThe reviewed trials were highly variable in methods and quality, and the evidence provided by these studies was weak. Cure rates with several treatments were variable, and although 5-FU presents therapeutic results that are inferior to those seen with 5-FU + Inf alpha-2a (high dose) and 5-FU + CO2 Laser + Inf alpha-2a (high dose), the treatment should not be abandoned. Topical treatment with 5-FU has a therapeutic effect; however, the benefits and risks have not been determined clearly and further studies are needed.Universidade Federal de São Paulo, Dept Med, Escola Paulista Med, São Paulo, BrazilUniversidade Federal de São Paulo, Brazilian Cochrane Ctr, Escola Paulista Med, São Paulo, BrazilUniv Fed Rio Grande do Norte, Dept Med, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Med, Escola Paulista Med, São Paulo, BrazilUniversidade Federal de São Paulo, Brazilian Cochrane Ctr, Escola Paulista Med, São Paulo, BrazilWeb of Scienc
Collisional ionization equilibrium for optically thin plasmas. I. Updated recombination rate coefficients for bare through sodium-like ions
No full textReliably interpreting spectra from electron-ionized cosmic plasmas requires accurate ionization balance calculations for the plasma in question. However, much of the atomic data needed for these calculations have not been generated using modern theoretical methods and are often highly suspect. This translates directly into the reliability of the collisional ionization equilibrium (CIE) calculations. We make use of state-of-the-art calculations of dielectronic recombination (DR) rate coefficients for the hydrogenic through Na-like ions of all elements from He up to and including Zn. Where measurements exist, these published theoretical DR data agree with recent laboratory work to within typically 35% or better at the temperatures relevant for CIE. We also make use of state-of-the-art radiative recombination (RR) rate coefficient calculations for the bare through Na-like ions of all elements from H through to Zn. Here we present improved CIE calculations for temperatures from 104 to 109 K using our data and the recommended electron impact ionization data of Mazzotta et al. for elements up to and including Ni and Mazzotta for Cu and Zn. DR and RR data for ionization stages that have not been updated are also taken from these two additional sources. We compare our calculated fractional ionic abundances using these data with those presented by Mazzotta et al. for all elements from H to Ni. The differences in peak fractional abundance are up to 60%. We also compare with the fractional ionic abundances for Mg, Si, S, Ar, Ca, Fe, and Ni derived from the modern DR calculations of Gu for the H-like through Na-like ions, and the RR calculations of Gu for the bare through F-like ions. These results are in better agreement with our work, with differences in peak fractional abundance of less than 10%
Gemcitabine: Progress in the treatment of pancreatic cancer
No full textUnresectable pancreatic cancer has a dismal prognosis with a median survival of 3-5 months in untreated disease. Since the introduction of gemcitabine, pancreatic cancer may no longer be regarded a chemotherapy-resistant tumor. Treatment with single-agent gemcitabine achieved clinical benefit and symptoms improvement in 20-30% of patients. While 1-year survival was observed in 2% of 5-fluorouracil (5-FU)-treated patients, it was raised to 18% by single-agent gemcitabine. Good treatment tolerability and low incidence of side effects are clear advantages of single-agent gemcitabine. Improvement of efficacy is, however, expected from combination treatment. Gemcitabine and cisplatin given as first-line treatment in three studies achieved a median survival of 7.4-8.3 months. One-year survival was raised to 28% as reported in one study. Comparable activity was obtained by a combination of gemcitabine with 5-FU. Nine studies using gemcitabine in combination with standard-dose or high-dose 5-FU reported a median survival ranging from 5.5 to 13 months. Notwithstanding these promising results, recommendations regarding palliative chemotherapy of pancreatic cancer remain tentative and still need confirmation by presently ongoing phase III trials. Inclusion of pancreatic cancer patients into clinical trials should be a major goal. Outside clinical trials, patients should present with an adequate PS (Karnofsky-performance index greater than or equal to 70) to qualify for chemotherapy. Copyright (C) 2001 S. Karger AG, Basel
Author Co-Citation Analysis (ACA): a powerful tool for representing implicit knowledge of scholar knowledge workers
No full textIn the last decade, knowledge has emerged as one of the most important and valuable organizational assets. Gradually this importance caused to emergence of new discipline entitled ―knowledge management‖. However one of the major challenges of knowledge management is conversion implicit or tacit knowledge to explicit knowledge. Thus Making knowledge visible so that it can be better accessed, discussed, valued or generally managed is a long-standing objective in knowledge management. Accordingly in this paper author co- citation analysis (ACA) will be proposed as an efficient technique of knowledge visualization in academia (Scholar knowledge workers)
Observational cohort study of first-line bevacizumab combined with chemotherapy in metastatic colorectal cancer (HGCSG0802): Comparison of infusional FU/oxaliplatin(OX)+BV and oral FU/OX+BV.
No full text 527 Background: A few reports have shown no difference between the efficacy of infusional FU and that of oral FU (Capecitabine/S-1) for colorectal cancer, and some studies have reported the non-inferiority between infusional FU/Oxaliplatin (OX) and oral FU/OX for metastatic colorectal cancer (mCRC). We performed a sub-group comparison between infusional FU/OX (mFOLFOX6 + BV: iFU) and oral FU/OX (CapeOX/SOX + BV: oFU) from the HGCSG0802 observational cohort study with investigated Japanese patients (pts) treated with first line BV for mCRC. Methods: The objective of HGCSG0802 was to evaluate progression-free survival (PFS), overall survival (OS), time to treatment-failure (TTF), response rate (RR), safety and so on. The key eligibility criteria of HGCSG0802 were with evaluable lesions, older than 20 years, ECOG PS 0-2, and this analysis used the cohort treated with OX-based regimens.In this analysis, pts characteristics, RR and safety were compared using Fisher’s exact test. PFS and TTF were compared using log-rank test. Results: Of 108 pts (the full analysis set), 95 pts were evaluable for treated with OX-based regimens. Forty-eight pts (50.5%) were treated with iFU and 47 pts (49.5%) were treated with oFU (CapeOX + BV 42 pts/SOX + BV 5 pts). The pts characteristics between those were generally balanced except for PS 0-1 (72.9% in iFU/93.6% in oFU; p=0.012) and synchronous liver metastases (mets) (93.8% in iFU/78.8% in oFU; p=0.040). Adverse events ≥grade 3 were balanced except for leucopenia (25.0% in iFU versus 2.1% in oFU; p=0.002) and neutropenia (43.5% in iFU and 10.9% in oFU; p=0.001). Hand-foot skin reaction was not different between two cohorts. RR was 62.5% in iFU versus 71.1% in oFU (p=0.835). The median PFS was 8.3 months in iFU versus 8.2 months in oFU (p=0.835). Conclusions: The HGCSG0802 could be a database to investigate first line BV for mCRC in clinical practice. As a result of this analysis, in Japanese daily practice, efficacy was no significant difference between infusional FU/OX and oral FU/OX, and the profiles of adverse events varied from each regimens. </jats:p
Analysis of MicroRNA Expression in Embryonic Developmental Toxicity Induced by MC-RR
No full textAs cynobacterial blooms frequently occur in fresh waters throughout the world, microcystins (MCs) have caused serious damage to both wildlife and human health. MCs are known to have developmental toxicity, however, the possible molecular mechanism is largely unknown. This is the first toxicological study to integrate post-transcriptomic, proteomic and bioinformatics analysis to explore molecular mechanisms for developmental toxicity of MCs in zebrafish. After being microinjected directly into embryos, MC-RR dose-dependently decreased survival rates and increased malformation rates of embryos, causing various embryo abnormalities including loss of vascular integrity and hemorrhage. Expressions of 31 microRNAs (miRNAs) and 78 proteins were significantly affected at 72 hours post-fertilisation (hpf). Expressions of miR-430 and miR-125 families were also significantly changed. The altered expressions of miR-31 and miR-126 were likely responsible for the loss of vascular integrity. MC-RR significantly reduced the expressions of a number of proteins involved in energy metabolism, cell division, protein synthesis, cytoskeleton maintenance, response to stress and DNA replication. Bioinformatics analysis shows that several aberrantly expressed miRNAs and proteins (involved in various molecular pathways) were predicted to be potential MC-responsive miRNA-target pairs, and that their aberrant expressions should be the possible molecular mechanisms for the various developmental defects caused by MC-RR
The proteomic study on cellular responses of the testes of zebrafish (Danio rerio) exposed to microcystin-RR
No full textMicrocystin-RR (MC-RR) is a commonly encountered cyanotoxin and receives increasing attention due to the risk of its bioaccumulation in aquatic animals like fish. This study investigated the protein profiles of zebrafish (Danio rerio) testes after intraperitoneal injection (i.p.) with 0.5 LD50 (2000 mu g/kg). MC-RR caused a noticeable damage to testicular ultrastructure, showing widened intercellular junction, distention of mitochondria. The testes showed a rapid response of its defense systems to the oxidative stress caused by MC-RR. This is the first to use a proteomic approach to obtain an overview of the effects of MC-RR on the testes of zebrafish. The proteomic results revealed that toxin exposure remarkably altered the abundance of 24 proteins that were involved in cytoskeleton assembly, oxidative stress, glycolysis metabolism, calcium ion binding and other biological functions. In conclusion, MC-RR damaged the testes and was toxic to the reproductive system of male zebrafish mainly through causing oxidative stress.Microcystin-RR (MC-RR) is a commonly encountered cyanotoxin and receives increasing attention due to the risk of its bioaccumulation in aquatic animals like fish. This study investigated the protein profiles of zebrafish (Danio rerio) testes after intraperitoneal injection (i.p.) with 0.5 LD50 (2000 mu g/kg). MC-RR caused a noticeable damage to testicular ultrastructure, showing widened intercellular junction, distention of mitochondria. The testes showed a rapid response of its defense systems to the oxidative stress caused by MC-RR. This is the first to use a proteomic approach to obtain an overview of the effects of MC-RR on the testes of zebrafish. The proteomic results revealed that toxin exposure remarkably altered the abundance of 24 proteins that were involved in cytoskeleton assembly, oxidative stress, glycolysis metabolism, calcium ion binding and other biological functions. In conclusion, MC-RR damaged the testes and was toxic to the reproductive system of male zebrafish mainly through causing oxidative stress
So Tom has turned a poet, what a dear [first line]
No full textstrophicnasame as Box 192 Item 50Cover is duplicated in 192.050.
Music is duplicated in 192.050.Johns Hopkins University, Levy Sheet Music Collection, Box
192, Item 051Thomas M-rr-s, Author of "How They Act in Baltimore." "Mephistophiles K.G.S.
- …
