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surfactant-free synthesis of metallic bismuth spheres by microwave-assisted solvothermal approach as a function of the power level

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Frontiers of Materials science 2016年第4期10卷 394-404页

作者： Miriam EsTRADA FLOREs Patricia sANTIAGO JACINTO Carmen M. REZA sAN GERMAN Luis RENDON VAZQUEZ Raul BORJA URBY Nicolas CAYETANO castro Instituto de Investigaciones en Materiales Circuito Exterior S/N Zona de Institutos Ciudad Universitaria C.P. 04510 Mexico D.F. Mexico Instituto de Fisica Circuito de la Investigaci6n Cientffica Edificio Marcos MoshinskyLaboratorio de Materiales Nanoestructurados Ciudad Universitaria C.P. 04510 Mexico D.F. Mexico Escuela superior de Ingenierfa Qufmica e Industrias Extractivas Unidad Profesional Adolfo L6pez Mateos Edif. Z-5 2do. Piso Instituto Politecnico Nacional C.P. 07738 Mexico D.F. Mexico Centro de Nanociencias y Micro y Nanotecnologfas. Instituto Politecnico Nacional Av. Luis Enrique Erro S/NUnidad Profesional Adolfo Lopez Mateos Zacatenco Delegaci6n Gustavo A. Madero C.P. 07738 Mexico D.F. Mexico

In the present work, the synthesis of micro- and nano-sized spheres of metallic bismuth by microwave-assisted solvothermal method is reported. The synthesis method was carried out at different power levels and at a unique frequency of microwave irradiation. The sphere sizes were controlled by the microwave power level and the concentration of dissolved precursor. structural and morphological characterization was performed by sEM, HRTEM, EELs and XRD. The results demonstrated that rhombohedral zero valent Bi spheres were synthesized after microwave radiation at 600 and 1200 W. However, if the power level is decreased to 120 W, a monoclinic phase of Bi203 is obtained with a flake-like morphology. In comparison with a conventional hydrothermal process, the microwave-assisted solvothermal approach provides many advantages such as shorter reaction time, optimum manipulation of morphologies and provides a specific chemical phase and avoids the mixture of structural phases and morphologies which is essential for further applications such as drug delivery or functionalization with organic materials, thanks to its biocompatibility.

关键词： microwave oven power level metallic bismuth spherical structures mechanism of formation electron energy loss spectroscopy (EELs)

Intestinal inflammation and the microbiota:Beyond diversity

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World Journal of Gastroenterology 2022年第26期28卷 3274-3278页

作者： Gabriela Gama Freire Alberca Naiane samira souza Cardoso Rosa Liliana solis.castro Viviane Nakano Ricardo Wesley Alberca Department of Microbiology Institute of Biomedical SciencesUniversity of São PauloSão Paulo 05508-000Brazil Departamento Académico de Biología Bioquímica Facultad de Ciencias de la SaludUniversidad Nacional de TumbesPampa Grande 24000TumbesPeru Laboratorio de Dermatologia e Imunodeficiencias Departamento de DermatologiaFaculdade de Medicina FMUSPUniversidade de São PauloSão Paulo 01246-903Brazil

The recent manuscript entitled“Relationship between clinical features and intestinal microbiota in Chinese patients with ulcerative colitis”reported a difference in the intestinal microbiota of patients with ulcerative colitis according to the severity of the *** influence of the intestinal microbiota on the development and progress of gastrointestinal disorders is well *** the diversity in the microbiome,the presence of virulence factors and toxins by commensal bacteria may affect an extensive variety of cellular processes,contributing to the induction of a proinflammatory environment.

关键词： Inflammation Microbiota Toxins Intestinal Ulcerative Colitis Cancer

Efficient fully laser-patterned flexible perovskite modules and solar cells based on low-temperature solution-processed snO2/mesoporous-TiO2 electron transport layers

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Nano Research 2018年第5期11卷 2669-2681页

作者： Janardan Dagar sergio castro-Hermosa Matteo Gasbarri Alessandro L. Palma Lucio Cina Fabio Matteocci Emanuele Calabro Aldo Di Carlo Thomas M. Brown CHOsE (Centre for Hybrid and Organic solar Energy) Department of Electronic Engineering University of Rome Tor Vergato Via del Politecnico 1 00133 Rome Italy Cicci Research srl via Giordania 227 Grosseta 58100 Italy Department of semiconductor electronics and device physics National University of Science and Technology "MISiS" Leninskii pr.4 Moscow 119049 Russia

Efficient flexible perovskite solar cells and modules were developed using a combination of snO2 and mesoporous-TiO2 as a fully solution-processed electron transport layer （ETL）. Cells using such ETLs delivered a maximum power conversion efficiency （PCE） of 14.8%, which was 30% higher than the PCE of cells with only snO2 as the ETL. The presence of a mesoporous TiO2 scaffold layer over snO2 led to higher rectification ratios, lower series resistances, and higher shunt resistances. The cells were also evaluated under 200 and 400 lx artificial indoor illumination and found to deliver maximum power densities of 9.77 μW/cm^2 （estimated PCE of 12.8%） and 19.2 μW/cm^2 （estimated PCE of 13.3%）, respectively, representing the highest values among flexible photovoltaic technologies reported so far. Furthermore, for the first time, a fully laser-patterned flexible perovskite module was fabricated using a complete three-step laser scribing procedure （P1, P2, P3） with a PCE of 8.8% over an active area of 12 cm^2 under an illumination of 1 sun.

关键词： snO2/mesoporous-TiO2(meso-TiO2) electron transport layer,flexible perovskite solar cell,flexible perovskite module,laser patterning indoor light harvesting

DNA metabarcoding the diet of Podarcis lizards endemic to the Balearic Islands

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Current Zoology 2023年第5期69卷 514-526页

作者： Iris Alemany Ana Pérez-Cembranos Valentín Pérez-Mellado JoséAurelio castro Antònia Picornell Cori Ramon JoséA Jurado-Rivera Deptartment of Biology Universitat de les Illes BalearsCtra.Valldemossa km 7’5Palma de Mallorca07122Balearic IslandsSpain and Department of Animal Biology Universidad de SalamancaCampus Miguel de Unamuno s/n37007SalamancaSpain

Dietary studies are essential to unravel the functioning of ecosystems and ultimately to understand *** task,which at first may seem simple,becomes especially complex in those cases of omnivorous species with highly variable *** this regard,the emergence of next-generation DNA sequencing methodologies represents a powerful tool to address the *** we implement a high-throughput metabarcoding strategy based on the analysis of four molecular markers aimed at sequencing both mitochondrial(animal prey)and chloroplast(diet plants)genome fragments from fecal samples of two lizard species endemic to the Balearic Archipelago(Podarcis lilfordi and ***)obtained through non-invasive *** results allowed for the characterization of their diets with a high degree of taxonomic detail and have contributed a large number of new trophic *** reported diets are based mainly on the consumption of arthropods,mollusks and plants from a diversity of taxonomic orders,as well as carrion and marine *** analyses also reveal inter-and intra-specific differences both in terms of seasonality and geographical distribution of the sampled lizard *** molecular findings provide new insights into the trophic interactions of these threatened endemic lizards in their unique and isolated ecosystems.

关键词： Balearic archipelago COI metabarcoding Podarcis lilfordi Podarcis pityusensis psbA-trnH rbcL trophic ecology

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弹簧钢淬火残余应力模拟(英文)

金属热处理 2003年第11期28卷 47-52页

作者： G.sánchez sarmiento M.castro G.E.Totten L.Harvis G.Webster M.F.Cabré Universidad de Buenos Aires Facultad de IngenieríaUniversidad de Buenos AiresFacultad de IngenieríaDow Chemical Co.Tenaxol Inc.Dow Chemical Co.Universidad del Salvador Buenos AiresArgentinaBuenos AiresArgentinaTarrytownN YUSAMilwakeeWisconsinUSATarrytownN YUSABuenos AiresArgentina

对AIsI 5 16 0H弹簧钢圆柱试样在不同温度的 2 5 %水溶性聚 (亚烷基 )二醇UCONHT淬火液和Arco5 2 1淬火油中淬火产生的残余应力及畸变进行了对比性研究。试棒的直径分2 0 5 6mm (0 81inches)和13 4 5mm (0 5 3inches)两种。先用I... 详细信息

对AIsI 5 16 0H弹簧钢圆柱试样在不同温度的 2 5 %水溶性聚 (亚烷基 )二醇UCONHT淬火液和Arco5 2 1淬火油中淬火产生的残余应力及畸变进行了对比性研究。试棒的直径分2 0 5 6mm (0 81inches)和13 4 5mm (0 5 3inches)两种。先用INC PHATRAN代码计算出试样随时间变化的传热系数 ,并用ABAQUs/标准有限元软件估算热处理过程中的残余应力和畸变。在试样中心放置热电偶 ,测出冷却曲线 ,根据所测的冷却曲线 ,用INC PHATRAN解决了伴随相变时的逆向热传导问题。试验了这两种淬火介质 ,力图将热处理畸变和开裂减少到最少 ,并得出了颇有价值的结论。

关键词：弹簧钢淬火残余应力数值模拟

Reservoir Inflow Estimation Using Remote sensing, GIs and Geosimulation

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Journal of Earth science and Engineering 2012年第8期2卷 472-487页

作者： Czar Jakiri s. sarmiento Rhodora M. Gonzalez Peter Paul M. castro Geosimulation Research Group Department of Geodetic Engineering University of the Philippines Diliman Quezon City 1101Philippines National Hydraulics Research Center Institute of Civil Engineering University of the Philippines Diliman Quezon City 1101Philippines

Rs （remote sensing） applications to hydrological problem solving have successfully transitioned from being experimental to operational in the last couple of years, and information gathered through these technologies can facilitate water resource procedures. Patterns from Rs imagery can be translated into a deterministic distribution of input data over a wide area on a pixel-by-pixel basis. This paper presents the implementation of different methodologies of integrating satellite-derived information from Rs, and GIs （geographic information system） visualization and simulation capabilities in improving hydrologic estimation processes.

关键词： Rs (remote sensing) Geosimulation G1s (geographic information system).

On a shallow Water Model for the simulation of Turbidity Currents

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Communications in Computational Physics 2009年第9期6卷 848-882页

作者： T.Morales de Luna M.J.castro Dıaz C.Pares Madronal E.D.Fernandez Nieto Analisis Matematico Facultad de Ciencias–Univ.MalagaCampus de Teatinoss/n29071-MalagaSpain Dpto.Matematica Aplicada I ETS Arquitectura–Univ.SevillaAvda.Reina Mercedes N.241012-SevillaSpain

We present a model for hyperpycnal plumes or turbidity currents that takes into account the interaction between the turbidity current and the bottom,considering deposition and erosion effects as well as solid transport of particles at the bed load due to the *** entrainment from the ambient water in which the turbidity current plunges is also *** of ambient water is neglected and the rigid lid assumption is *** model is obtained as a depth-average system of equations under the shallow water hypothesis describing the balance of fluid mass,sediment mass and mean *** character of the system is analyzed and numerical simulations are carried out using finite volume schemes and path-conservative Roe schemes.

关键词： Turbidity currents hyperbolic systems finite volume methods path-conservative schemes numerical modeling

Femoral positioning influences ipsi-and contralateral anterior cruciate ligament rupture following its reconstruction:systematic review and meta-analysis

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World Journal of Orthopedics 2017年第8期8卷 644-650页

作者： Gustavo Constantino de Campos Paulo Eduardo Portes Teixeira Alex castro Wilson de Mello Alves Junior Department of Orthopaedics Campinas’s State University (UNICAMP) Instituto Wilson Mello Research and Study Center

AIM To systematically review the incidence of ipsilateral graft re-rupture and contralateral anterior cruciate ligament(ACL) rupture following its reconstruction, with special attention to the femoral drilling technique. METHODs systematic review and meta-analysis of high-level prospective studies searched in MEDLINE database following PRIsMA statement. The rate of ipsilateral graft re-rupture and contralateral rupture in patients submitted to either transtibial(TT) technique(isometric) or anteromedial(AM) technique(anatomic) was compared. REsULTs Eleven studies met the criteria and were included in final analysis. Reconstructions using the AM technique had a similar chance of contralateral ACL rupture when compared to the chance of ipsilateral graft failure(OR = 1.08, P = 0.746). In reconstructions using TT technique, the chance of contralateral ACL rupture was approximately 1.5 times higher than ipsilateral graft failure(OR = 1.49, P = 0.048). Incidence of contralateral lesions were similar among the techniques TT(7.4%) and AM(7.0%)(P = 0.963), but a trend could be noticed with a lower incidence of lesion in the ipsilateral limb when using the TT technique(4.9%) compared to the AM technique(6.5%)(P = 0.081).CONCLUsION ACL reconstruction by TT technique leads to lower incidence of graft re-injury than contralateral ACL lesion. There is no difference between the chance of re-injury after AM technique and the chance of contralateral ACL lesion(native ligament) with either technique.

关键词： Anterior cruciate ligament Anterior cruciate ligament reconstruction Arthroscopy Graft survival

Upscaling human mesenchymal stromal cell production in a novel vertical-wheel bioreactor enhances extracellular vesicle secretion and cargo profile

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生物活性材料(英文) 2023年第7期25卷 732-747页

作者： Richard Jeske Chang Liu Leanne Duke Maria L.Canonicco castro Laureana Muok Peggy Arthur Mandip singh sunghoon Jung Li sun Yan Li Department of Chemical and Biomedical Engineering FAMU-FSU College of EngineeringFlorida State UniversityTallahasseeFLUSA Department of Biomedical sciences College of MedicineFlorida State UniversityTallahasseeFLUSA College of Pharmacy and Pharmaceutical sciences Florida A&M UniversityTallahasseeFLUSA 阿

Human mesenchymal stromal cells(hMsCs)are mechanically sensitive undergoing phenotypic alterations when subjected to shear stress,cell aggregation,and substrate changes encountered in 3D dynamic bioreactor ***,little is known about how bioreactor microenvironment affects the secretion and cargo profiles of hMsC-derived extracellular vesicles(EVs)including the subset,“exosomes”,which contain therapeutic proteins,nucleic acids,and lipids from the parent *** this study,bone marrow-derived hMsCs were expanded on 3D synthemax II microcarriers in the PBs mini 0.1L Vertical-Wheel bioreactor system under variable shear stress levels at 25,40,and 64 RPM(0.1-0.3 dyn/cm^(2)).The bioreactor system promotes EV secretion from hMsCs by 2.5-fold and upregulates the expression of EV biogenesis markers and glycolysis genes compared to the static 2D *** microRNA cargo was also altered in the EVs from bioreactor culture including the upregulation of miR-10,19a,19b,21,132,and *** protein cargo was characterized by proteomics analysis,showing upregulation of metabolic,autophagy and ROs-related proteins comparing with 2D cultured *** addition,the scalability of the Vertical-Wheel bioreactor system was demonstrated in a 0.5L bioreactor,showing similar or better hMsC-EV secretion and cargo content compared to the 0.1L *** study advances our understanding of bio-manufacturing of stem cell-derived EVs for applications in cell-free therapy towards treating neurological disorders such as ischemic stroke,Alzheimer’s disease,and multiple sclerosis.

关键词： Human mesenchymal stromal cells Extracellular vesicles Cargo profile 3D microcarriers shear stress Vertical-Wheel bioreactor