http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Joana Laranjeira Correia,Gonçalo R. M. Ferreira,João Gouveia Fiuza,Mariana Duarte Almeida,Joana Coelho,Emanuel Correia,José Miguel Correia,Davide Moreira,Nuno Craveiro,Maria Luísa Gonçalves,Vanda Deve 한국심초음파학회 2024 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.32 No.-
Background Left ventricular (LV) thrombus has a higher incidence among patients with anterior ST-elevation myocardial infarction (STEMI) when compared to other types of acute myocardial infarction and is associated with worse prognosis. The management of LV thrombus diagnosis remains challenging. Contrast echocardiography (transthoracic echocardiography, TTE) has shown potential in improving the accuracy for its diagnosis, thereby influencing treatment strategies concerning antithrombotic/anticoagulation therapy. The aim of this study was to assess the effectiveness of contrast TTE as a routine screening method for detecting LV thrombus in the acute phase of anterior STEMI. Methods A prospective, single center, randomized controlled trial was conducted among patients with anterior STEMI. The study group underwent contrast TTE, while the control group received a conventional approach. Demographical, clinical, and diagnostic data were collected. Thrombus detection rates were compared between groups. Results A total of 68 patients were included (32 in the study group and 36 in the control group). No substantial baseline differences were observed between groups. Thrombus detection rate was 25.0% in the study group and 13.9% in the control group, however these results did not reach statistical significance (P = 0.24). The prevalence of anterior/ apical aneurysm was higher in the study group (46.9% vs. 22.2%, P = 0.03). Conclusions Conventional TTE may be adequate for diagnosing LV thrombus in the acute phase of anterior STEMI; however, further larger-scale and multicenter studies are necessary to obtain more robust and conclusive results. Ultrasound contrast may play a significant role in the detection of anterior/apical aneurysms, which are known risk factors for the subsequent development of thrombus. Trial registration NCT06480929 (ClinicalTrials.gov, Retrospectively registered).
Current-Mode Algorithmic Pipeline Analog-to-Digital Converter
Correia, A. J.,Guilherme, J. C.,Franca, J. E. 대한전자공학회 1996 APCCAS:Asia Pacific Conference on Circuits And Sys Vol.1 No.1
Current-mode integrated circuit design techniques offering full compatibility with mainstream digital CMOS technology have been investigated for the realization of an 8-bit 1 MHz analog-to-digital converter. This is based on a modular 1-bit-per-stage pipeline architecture employing a compact algorithmic processing circuitry in each stage. The prototype chip fabricated in a 1.2 ㎛ digital CMOS technology occupies 0.655 ㎟ of silicon area and dissipates 50 mW at 5 V supply.
Correia, F.F.,Waterbury, T.L.,Rosan, B.,DiRienzo, J.M. Korean Academy of Oral Biology and the UCLA Dental 2001 International Journal of Oral Biology Vol.26 No.1
The major outer membrane porin, FomA, from Fusobacterium mucleatum ATCC 10953 was previously shown to be a coaggregation receptor for Streptococcus crista CC5A. The fomA gene was amplified by PCR and cloned in Escherichia coli. The nucleotide sequence of the recombinant gene contained a three base pair deletion and four single base differences compared to the native fomA sequence. The recombinant gene product was glutathione-S-transferase (GST). The GST portion was removed by treatment with thrombin and the FomA portion purified in milligram quantities. The purified recombinant protein contained a glycylserine dipeptide at its amino terminus, bound IgG from antiserum made against native FomA, and retained the heat-modifiable property of the native protein. However, the recombinant FomA failed to bind to S. crista CC5A or inhibit coaggregation between this bacterium and F. nucleatum. FomA may require outer membrane components, such as lipopolysaccharide, to stabilize the protein in a structure recognized by the streptococcal adhesin.
FE simulation of S-N curves for a riveted connection using two-stage fatigue models
Correia, Jose A.F.O.,de Jesus, Abilio M.P.,Silva, Antonio L.L.,Pedrosa, Bruno,Rebelo, Carlos,Calcada, Rui A.B. Techno-Press 2017 Advances in computational design Vol.2 No.4
Inspections of ancient metallic bridges have illustrated fatigue cracking in riveted connections. This paper presents a comparison between two alternative finite element (FE) models proposed to predict the fatigue strength of a single shear and single rivet connection. The first model is based on solid finite elements as well as on contact elements, to simulate contact between the components of the connection. The second model is built using shell finite elements in order to model the plates of the riveted connection. Fatigue life predictions are carried out for the shear splice, integrating both crack initiation and crack propagation lives, resulting from the two alternative FE models. Global fatigue results, taking into account several clamping stresses on rivet, are compared with available experimental results. Proposed comparisons between predictions and experimental data illustrated that the proposed two-stage model yields consistent results.
Correia, Frederick F.,Lamont, Richard,Bayer, Manfred E.,Rosan, Burton,Dirienzo, Joseph M. Korean Academy of Oral Biology and the UCLA Dental 1997 International Journal of Oral Biology Vol.22 No.4
Streptococcus crista displays polar tufts of fimbriae through which it binds to Fusobacterium nucleatum to form morphological units termed "corncobs". In a previous report (Oral Microbiol. Immunol. 10: 220-226, 1995) Tn916 was used to make binding-deficient mutants of S. crista. In this study the transposon insertion site in one of these mutants, CC5A-B15, was characterized. Electron microscopy showed that the morphology of the fimbrial tufts of the binding-deficient mutant was altered. Genetic linkage between the Tn916 insertion in CC5A-B15 and the binding deficient phenotype was confirmed by back-crossing the mutated locus into the parental strain. The mutated locus was cloned and sequenced using an inverse polymerase chain reaction protocol. The resulting product was then used to obtain the wild type locus from a bacteriophage λEMBL3-CC5A and DNA library. The exact site of the Tn916 insertion was determined by comparison of the mutated and wild-type DNA sequences. Based on comparisons to Streptococcus pyogenes M1 and Escherichia coli K12 genome sequences, the transposable element disrupted an apparent ATP-binding cassette (ABC). This ABC transport locus consists of four open reading frames potentially encoding an ATP-binding protein, a lipoprotein, and two transport-related proteins. The results suggest that the reduction in binding of the S. crista mutant to F. nucleatum may be due to the altered transport and assembly of components of the fimbrial tufts.
Luxury product and brand purchasing behavior: A conceptual perspective
Antonia Correia,Metin Kozak 한국마케팅과학회 2023 마케팅과학연구 Vol.33 No.3
Over the recent years, there has been a steady increase in the number of customers in luxury market. Such a substantial rise has gained much attention from both academics and industry experts seeking to better understand the meanings and factors involved in luxury consumption. Therefore, this special section aims to enrich and update the existing body of knowledge on luxury product and brand purchasing behaviour. We have encouraged the contributors to forward both conceptual and empirical papers reflecting current concerns in the field of luxury shopping, more specifically in luxury product and brand purchasing behaviour. In the end, this special section includes three papers on external store environment, meaning of luxury, and luxury brand fashion. Certainly, additional references are necessary for better understanding the meaning and contents of luxury consumption and main drivers behind it. The special section introduces the reader to some of these important references but also notes that there is still avenue for more studies in the future.
Jaqueline Correia Villac¸a,Luiz Cla´udio R. Pereira da Silva,Luisa Helena Falca˜o Barbosa,Carlos Rangel Rodrigues,Luiz Marcelo Lira,Fla´ via Almada do Carmo,Valeria Pereira de Sousa,Maria Ineˆs Bruno 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
The purpose of this study was to prepare and characterize lamellar silicate nanocomposites usingexfoliation processes, high clay load and polyvinylpyrrolidone (PVP), ethylcellulose (EC) andpolyquaternium-H (PQH). The clays (sodium montmorillonite, Viscogel S4TM, S7TM and B8TM) werepre-treated with ultrasonic energy in order to increase clay exfoliation yields. Polymeric nanocompositeswere characterized by XRPD, DSC, TGA, DLS and NMR. The results revealed a new exfoliationmethod and new intercalated nanocomposites. High clay load was used to obtain the nanocomposites,which enables its application at an industrial scale. These nanocomposites could be broadly appliedacross the pharmaceutical, medical and food industries.