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| 1 | Therapeutic and biological activities of Calotropis procera(Ait.) R.Br.显示文摘Medicinal plants have been used to treat various ailments of the poor population around the world;hence the interest among researchers to know the active ingredients of certain plants has being increased.The Calotropis procera(C.procera) is a plant original from Africa,commonly found in northeastern Brazil.It is well known for their pharmacological properties,since it produces large amounts of latex.The important role that medicinal plants play in folk medicine has led us to develop this article in order to review the major pharmacological activities of C. procera. | Marcia Calheiros Chaves Silva Antonio Batista da Silva Fabiano Moura Teixeira Paulo Cesar Pereira de Sousa Regina Maria Macedo Rondon Jose Eduardo Ribeiro Honorio Junior Luiz Rafael Leite Sampaio Samanda Lima Oliveira Angela Nadyla Martins Holonda Silvania Maria Mendes de Vasconcelos | 2010 | Asian Pacific Journal of Tropical Medicine2010，3，4： | 2 |
| 2 | Efficient mid-infrared single-photon detection using superconducting NbTiN nanowires with high time resolution in a Gifford-McMahon cryocooler显示文摘Shortly after their inception, superconducting nanowire single-photon detectors(SNSPDs) became the leading quantum light detection technology. With the capability of detecting single-photons with near-unity efficiency,high time resolution, low dark count rate, and fast recovery time, SNSPDs outperform conventional single-photon detection techniques. However, detecting lower energy single photons(<0.8 eV) with high efficiency and low timing jitter has remained a challenge. To achieve unity internal efficiency at mid-infrared wavelengths, previous works used amorphous superconducting materials with low energy gaps at the expense of reduced time resolution(close to a nanosecond), and by operating them in complex milli Kelvin(mK) dilution refrigerators. In this work,we provide an alternative approach with SNSPDs fabricated from 5 to 9.5 nm thick NbTiN superconducting films and devices operated in conventional Gifford-McMahon cryocoolers. By optimizing the superconducting film deposition process, film thickness, and nanowire design, our fiber-coupled devices achieved >70% system detection efficiency(SDE) at 2 μm and sub-15 ps timing jitter. Furthermore, detectors from the same batch demonstrated unity internal detection efficiency at 3 μm and 80% internal efficiency at 4 μm, paving the road for an efficient mid-infrared single-photon detection technology with unparalleled time resolution and without mK cooling requirements. We also systematically studied the dark count rates(DCRs) of our detectors coupled to different types of mid-infrared optical fibers and blackbody radiation filters. This offers insight into the trade-off between bandwidth and DCRs for mid-infrared SNSPDs. To conclude, this paper significantly extends the working wavelength range for SNSPDs made from polycrystalline NbTiN to 1.5–4 μm, and we expect quantum optics experiments and applications in the mid-infrared range to benefit from this far-reaching technology. | Jin Chang Johannes W.N.Los Ronan Gourgues Stephan Steinhauer S.N.Dorenbos Silvania F.Pereira HPaul Urbach Val Zwiller Iman Esmaeil Zadeh | 2022 | Photonics Research2022，10，4： | 1 |
| 3 | Central corneal thickness measurements using Orbscan II, Visante, ultrasound, and Pentacam pachymetry after laser in situ keratomileusis for myopia显示文摘 | Thomas Ho Arthur C.K. Cheng Srinivas K. Rao Silvania Lau Chris K.S. Leung Dennis S.C. Lam | 2007 | Journal of Cataract & Refractive Surgery2007，，7： | 1 |
| 4 | Toric Implantable Collamer Lens for HighMyopic Astigmatic Asian Eyes显示文摘 | John Chang Silvania Lau | 2009 | Ophthalmology2009，116，12： | 1 |
| 5 | Oxidative stress in the hippocampus after pilocarpine‐induced status epilepticus in Wistar rats显示文摘 | Rivelilson M.Freitas Silvania M. M.Vasconcelos Francisca C. F.Souza Glauce S. B.Viana Marta M. F.Fonteles | 2005 | FEBS Journal2005，，6： | 1 |
| 6 | Central corneal thickness measurements using Orbscan II, Visante, ultrasound, and Pentacam pachymetry after laser in situ keratomileusis for myopia显示文摘 | Thomas Ho Arthur C.K. Cheng Srinivas K. Rao Silvania Lau Chris K.S. Leung Dennis S.C. Lam | 2007 | Journal of Cataract & Refractive Surgery2007，，7： | 1 |
| 7 | Convergence Analysis and Quality Criteria for an Iterative Schematization of Networks显示文摘 | Silvania Avelar | 2007 | GeoInformatica2007，，4： | 1 |
| 8 | Convergence Analysis and Quality Criteria for an Iterative Schematization of Networks显示文摘 | Silvania Avelar | 2007 | GeoInformatica2007，，4： | 1 |
| 9 | Quantum enhanced non-interferometric quantitative phase imaging显示文摘Quantum entanglement and squeezing have significantly improved phase estimation and imaging in interferometric settings beyond the classical limits.However,for a wide class of non-interferometric phase imaging/retrieval methods vastly used in the classical domain,e.g.,ptychography and diffractive imaging,a demonstration of quantum advantage is still missing.Here,we fill this gap by exploiting entanglement to enhance imaging of a pure phase object in a non-interferometric setting,only measuring the phase effect on the free-propagating field.This method,based on the so-called'transport of intensity equation',is quantitative since it provides the absolute value of the phase without prior knowledge of the object and operates in wide-field mode,so it does not need time-consuming raster scanning.Moreover,it does not require spatial and temporal coherence of the incident light.Besides a general improvement of the image quality at a fixed number of photons irradiated through the object,resulting in better discrimination of small details,we demonstrate a clear reduction of the uncertainty in the quantitative phase estimation.Although we provide an experimental demonstration of a specific scheme in the visible spectrum,this research also paves the way for applications at different wavelengths,e.g.,X-ray imaging,where reducing the photon dose is of utmost importance. | Giuseppe Ortolano Alberto Paniate Pauline Boucher Carmine Napoli Sarika Soman Silvania F.Pereira IvanoRuo-Berchera Marco Genovese | 2023 | Light(Science & Applications)2023，12，8： | 0 |
| 10 | Behavioral study with Erythrina velutina fractions显示文摘Objective:To study the behavioral effects of semi purified fraction prepared from the stem bark of Erythrina velutina on mice.Methods:Three chloroformic fractions(CA) at 50 or 100 mg/kg(CA1,CA2 and CA3) were tested in two behavioral tests;plus maze and open field.Results:In the plus maze test,it was observed a decrease in the number of entries in the closed arms(NECA) CA2 at both doses as compared to the control group.In the open field test,CA2 and CA3 fractions decreased the number of squares crossed and the time of permanence on the bar,increased the number of falls at both doses in the rota rod test.The CA2 fraction decreased the NECA,but this data did not characterize an anxiolytic effect.It was the consequence from decrease of locomotor activity(LA) observed in the open field test,that the decrease of LA and rearing,the number of falls and the decrease in time of permanence on the bar in rota rod test were observed after treatment with CA2 and CA3 at both doses,suggesting sedative effect.Conclusion:The present work demonstrated that CA2 and CA3 fractions have impairing effect on LA and motor coordination. | Silvania Maria Mendes Vasconcelos Natalia Martins Lima Lucas Siqueira de Lucena Alexandre Cesar Praxedes Rodrigues Edilberto Rocha Silveira Carlos Clayton Torres Aguiar Paula Matias Soares Francisca Clea Florenco de Sousa Glauce Socorro de Barros Viana | 2009 | Asian Pacific Journal of Tropical Medicine2009，2，5： | 0 |
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