169,796 research outputs found
GRAVIDEZ E TIRÓIDE
No full textActa Med Port. 2003 Sep-Oct;16(5):329-31.
[Pregnancy and the thyroid]
[Article in Portuguese]
Pereiras C, Horta C.
Serviço de Endocrinologia, Diabetes e Metabolismo, Hospital Geral Sto António, Porto.
Abstract
The author points out the changes occurred in the axis hypothalamus/hypofysis/thyroid during normal pregnancy. They mention fetus thyroid development different stages, as well as the thyroid hormone secretion through the fetus. They also give special attention to those pregnancies and its special features occurring in places where the amount of iodine isn't enough and how treatment must be carried out.
PMID: 14750275 [PubMed - indexed for MEDLINE
Pregnancy and the thyroid
No full textActa Med Port. 2003 Sep-Oct;16(5):329-31.
[Pregnancy and the thyroid]
[Article in Portuguese]
Pereiras C, Horta C.
Serviço de Endocrinologia, Diabetes e Metabolismo, Hospital Geral Sto António, Porto.
Abstract
The author points out the changes occurred in the axis hypothalamus/hypofysis/thyroid during normal pregnancy. They mention fetus thyroid development different stages, as well as the thyroid hormone secretion through the fetus. They also give special attention to those pregnancies and its special features occurring in places where the amount of iodine isn't enough and how treatment must be carried out.
PMID: 14750275 [PubMed - indexed for MEDLINE
Detecção de Pseudomonas spp. em gemas de pereiras européias.
No full textA morte de flores de pereiras européias (Pyrus communis L.) vem ocorrendo em pomares comerciais em Vacaria, RS. Em outros países, a doença está associada à Pseudomonas syringae pv. syringae (Pss) e possui uma estreita relação com o abortamento de gemas florais.Resumo
Redução da poda hibernal e aumento da produção de pereiras 'Hosui' pelo uso de prohexadiona cálcio.
No full textO objetivo deste trabalho foi avaliar o controle do desenvolvimento vegetativo e a capacidade produtiva de pereiras 'Hosui', em resposta ao uso de prohexadiona cálcio, nas condições climáticas do Sul do Brasil. Foram aplicadas diferentes doses de prohexadiona cálcio (0, 275, 550, e 825 g ha-1) em pereiras com 11 anos de idade, enxertadas sobre Pyrus calleryana . O uso de prohexadiona cálcio foi efetivo no controle do desenvolvimento vegetativo das pereiras 'Hosui' e reduziu a necessidade de poda hibernal, pela redução da massa total e do número de ramos podados. O controle do desenvolvimento vegetativo, pelo uso de prohexadiona cálcio, favorece o aumento da capacidade produtiva de pereiras 'Hosui', principalmente à concentração de 550 g ha-1
Caracterização fenológica de pereiras Housui e Kousui cultivadas sob clima Semiárido no Nordeste do Brasil.
No full textObservações fenológicas fornecem informações sensíveis para a determinação de como as espécies de plantas respondem às condições climáticas regionais, visando à produção de frutas em diferentes regiões. Assim, o experimento foi conduzido de setembro de 2010 a janeiro de 2011, com o objetivo de caracterizar os estádios fenológicos de pereiras Housui e Kousui, cultivadas em clima semiárido do Nordeste do Brasil. Os dados fenológicos (fases) foram coletados no pomar, em observações diárias, desde a aplicação de cianamida hidrogenada (para a quebra de dormência) até o amadurecimento das frutas. Concluíu-se que, em clima semiárido, as pereiras Housui e Kousui concluem seus ciclos fenológicos em 128 dias e 115 dias, respectivamente. Novas pesquisas e mais alguns anos de avaliação serão necessários para gerar um sistema de produção de peras no semiárido nordestino
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Compatibilidade anatômica de pereiras e marmeleiros enxertados nos porta-enxertos Pyrus calleryana e Chaenomeles sinensis
No full textThe objective of this work was to evaluate the graft growth and the anatomical characterization of pear (Pyrus communis x P. pyrifolia) and quince (Cydonia oblonga) cultivars grafted on Pyrus calleryana and Chaenomeles sinensis rootstocks. Sprouted graft percentages at 60 days and the length and diameter of the graft sproutings at 120 days were evaluated. Stem cuttings from the grafting region were performed in transversal and longitudinal sections, and the secondary xylem was separated for tissue comparison. The pear trees showed good development on P. calleryana rootstock, and the anatomical sections showed that the vascular tissues were connected, which did not occur when the trees were grafted on C. sinensis, in which the grafts sprouted, but did not develop, and the vascular tissues did not connect. The quince trees showed good development on both rootstocks due to the good connection of the vascular tissues. The connection of vascular tissues is essential for the success of grafting. The evaluated species did not differ significantly as to their secondary xylem tissues. The incompatibility found between the pear trees and the C. sinensis rootstocks is not anatomical.O objetivo deste trabalho foi avaliar o crescimento dos enxertos e a caracterização anatômica de cultivares de pereira e marmeleiro enxertadas nos porta-enxertos Pyrus calleryana e Chaenomeles sinensis. Foram feitas avaliações quanto às percentagens dos enxertos brotados aos 60 dias e quanto ao comprimento e o diâmetro da brotação dos enxertos aos 120 dias. Cortaram-se porções caulinares da região da enxertia, em seções transversais e longitudinais, e o xilema secundário foi separado para comparação dos tecidos. As pereiras apresentaram bom desenvolvimento sobre o porta-enxerto P. calleryana, e os cortes anatômicos apresentaram tecidos vasculares conectados, o que não ocorreu quando as pereiras foram enxertadas em C. sinensis, em que os enxertos brotaram mas não se desenvolveram, e os tecidos vasculares não se conectaram. Os marmeleiros apresentaram bom desenvolvimento em ambos os porta-enxertos, em razão da boa conexão dos tecidos vasculares. A conexão dos tecidos vasculares é fundamental para o sucesso da enxertia. As espécies utilizadas não diferiram significativamente quanto a seus tecidos do xilema secundário. A incompatibilidade encontrada entre as pereiras e o porta-enxerto C. sinensis não é anatômica
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
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