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Tailored optical propulsion forces for controlled transport of resonant gold nanoparticles and associated thermal convective fluid flows

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Light(Science & Applications) 2020年第1期9卷 256-266页

作者： Jose A.rodrigo Mercedes Angulo Tatiana Alieva Facultad de Ciencias Fisicas Ciudad Universitaria s/nUniversidad Complutense de Madrid28040 MadridSpain

Noble metal nanoparticles illuminated at their plasmonic resonance wavelength turn into heat *** phenomenon has prompted the development of numerous applications in science and *** optical manipulation of such resonant nanoparticles could certainly extend the functionality and potential applications of optothermal *** this article,we experimentally demonstrate optical transport of single and multiple resonant nanoparticles(colloidal gold spheres of radius 200 nm)directed by tailored transverse phase-gradient forces propelling them around a 2D optical *** show how the phase-gradient force can be designed to efficiently change the speed of the *** have found that multiple hot nanoparticles assemble in the form of a quasi-stable group whose motion around the laser trap is also controlled by such optical propulsion *** assembly experiences a significant increase in the local temperature,which creates an optothermal convective fluid flow dragging tracer particles into the ***,the created assembly is a moving heat source controlled by the propulsion force,enabling indirect control of fluid flows as a micro-optofluidic *** existence of these flows,probably caused by the temperature-induced Marangoni effect at the liquid water/superheated water interface,is confirmed by tracking free tracer particles migrating towards the *** propose a straightforward method to control the assembly size,and therefore its temperature,by using a nonuniform optical propelling force that induces the splitting or merging of the group of *** envision further development of microscale optofluidic tools based on these achievements.

关键词： thermal fluid transport

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Old climatically-buffered infertile landscapes(OCBILs):more than harsh habitats,Atlantic Forest inselbergs can be drivers of evolutionary diversity

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Journal of Mountain Science 2022年第9期19卷 2528-2543页

作者： Felipe de CARVALHO ARAÚJO Natália de AGUIAR-CAMPOS Cleber rodrigo de SOUZA Eduardo de Paiva PAULA Rubens Manoel dos SANTOS Laboratory of Phytogeography and Evolutionary Ecology Department of Forest SciencesFederal University of LavrasLavrasMinas GeraisBrazil

Granite-gneiss rock outcrop inselbergs are ancient stable ecosystems with old,climaticallybuffered infertile landscapes(OCBILs).Although inselbergs provide key ecosystem services,little is done for their conservation and,so far,a lot of their unknown evolutionary history has already been lost by human *** a fine-scale approach,here we tested if habitat and environmental filtering(the inselberg’s harshness)affect the evolutionary diversity of an Atlantic Forest inselberg in *** recorded all trees with a diameter at breast height≥5cm in 20 plots in four habitat types(total sampled area of 0.8 hectares),from highest to lowest:island,hillside,foothill,and semideciduous forest(matrix).We also collected soil samples for chemical,textural and physical soil *** fitted linear models to test the effects of soil and habitat on plotlevel metrics of phylogenetic diversity and structure,lineage diversity,phylogeneticβ-diversity,and evolutionary *** found that the upper inselberg habitats contain a distinct set of ancient,closely related,harsh-tolerant lineages,as well as a subset of lineages that persist under harsh conditions with a certain degree of water *** inferior inselberg habitats harbor higher lineage diversity than expected by *** strongly predicted evolutionary *** concluded that soil depth,slope,nutrients and texture(environmental filtering)and habitat types and topography(habitat filtering)shape the evolutionary history contained in fine-scale inselberg habitats,which should encourage the conservation of these ancient ecosystems.

关键词： Phylogenetic diversity Atlantic Forest Niche conservatism Environmental filters Soil fertility Terrestrial Island

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Fourier-Limited Attosecond Pulse from High Harmonic GenerationAssistedbyUlitrafast MagneticFields

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Ultrafast Science 2023年第5期3卷 51-59页

作者： rodrigo Martin-Hernandez Hongtao Hu Andrius Baltuska Luis Plaja Carlos Hernandez-Garcia'I Grupo de Investigacion en Aplicaciones del Lasery Fotonica Departamento de Fisica AplicadaUniversidad de SalamancaE-37008 SalamancaSpain Photonics Institute Technische Universitat WienA-1040 ViennaAustria

One of the main constraints for reducing the temporal duration of attosecond pulses is the attochirp inherent to the process of high-order harmonic generation(HHG).Though the attochirp can be compensated in the extreme-ultraviolet using dispersive materials,this is unfeasible toward x-rays,where the shortest attosecond or even sub-attosecond pulses could be *** theoretically demonstrate that HHG driven by a circularly polarized infrared pulse while assisted by an strong oscillating ultrafast intense magnetic field enables the generation of few-cycle Fourier-limited few attosecond *** such a novel scenario,the magnetic field transversally confines the ionized electron during the HHG process,analogously to a nanowire *** the electron is ionized,the transverse electron dynamics is excited by the magnetic field,acting as a high-energy reservoir to be released in the form of phase-locked spectrally wide high-frequency harmonic radiation during the electron recollision with the parent *** addition,the transverse breathing dynamics of the electron wavepacket,introduced by the magnetic trapping,strongly modulates the recollision efficiency of the electronic trajectories,thus the attosecond pulse *** aftermath is the possibility of producing high-frequency(hundreds of eV)attosecond isolated few-cycle pulses,almost Fourier *** isolated intense magnetic fields considered in our simulations,of tens of kT,can be produced in finite spatial volumes considering structured beams or stationary configurations of counter-propagating state-of-the-art multi-terawatt/petawatt lasers.

关键词： harmonic trapping intense

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Study of Branes with Variable Tension

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Communications in Theoretical Physics 2017年第11期67卷 595-599页

作者： rodrigo Aros Milko Estrada Departamento de Ciencias Fisicas Universidad Andres Bello Department of Physics Universidad de Antofagasta Instituto de Matematica Fisica y Estadistica Universidad de las Americas

In this work we study a brane world model with variable tension, which gives rise to four-dimensional cosmologies. The brane worlds obtained correspond to E?tv?s branes whose(internal) geometry can be casted as either a four-dimensional(A)dS_4 or a standard radiation period cosmology. The matter dominated period is discussed as well.

关键词： Randall–Sundrum brane world de Sitter hierarchy problem brane tension

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A visible light-mediated three-component strategy based on the ring-opening of cyclic ethers with aryldiazoacetates and nucleophiles

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Organic Chemistry Frontiers 2022年第5期9卷 1321-1326页

作者： Mateus L.Stivanin Rafael D.C.Gallo Joao Paulo M.Spadeto rodrigo A.Cormanich Igor D.Jurberg State University of Campinas Institute of ChemistryRua Monteiro Lobato 27013083-862 CampinasSPBrazil

A blue light-promoted reaction between aryldiazoacetates and different nucleophiles has been developed in the presence of THF(and other cyclic ethers)as the solvent,allowing the incorporation of these three elements into a single ***,this transformation represents an O–H insertion strategy of more complex alcohols into aryldiazoesters,without the need of pre-assembling *** method is mild and efficient and proceeds in the absence of metals,generally at room temperature.

关键词： temperature visible light

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Hepatobiliar manifestations in inflammatory bowel disease: A practical approach

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World Journal of Hepatology 2022年第2期14卷 319-337页

作者： Paulina Núñez F Fabiola Castro Gabriel Mezzano rodrigo Quera Diego Diaz Lorena Castro Universidad de los Andes Inflammatory Bowel Disease ProgramDigestive Disease CenterSantiago 7600976RMChile Inflammatory Bowel Disease Program Hospital San Juan de DiosUniversidad de ChileSantiago 7701230RMChile Universidad de los Andes Hepatology ProgramDigestive Disease CenterSantiago 7600976RMChile Department of Gastroenterology Hospital del Salvador/Universidad de ChileSantiago 7600976RMChile Universidad de los Andes Santiago 770976RMChile

Inflammatory bowel diseases(IBD)are associated with various hepatobiliary *** can occur at any moment in the course of the disease or associated with the *** prevalence of liver dysfunction can reach up to 50%in different *** fatty liver disease is considered the most common hepatobiliary complication in IBD,while primary sclerosing cholangitis is the most *** of hepatic manifestations in IBD involves a multidisciplinary approach that includes a high index of suspicion and joint management with *** medical confrontation with abnormal liver tests must include an exhaustive study to determine if these patterns can be related to IBD,associated diseases or to the therapies used.

关键词： Extraintestinal manifestations Inflammatory bowel disease Sclerosing primary cholangitis Hepatic steatosis Liver toxicity

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Interfacial Strategies for Smart Slippery Surfaces

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Journal of Bionic Engineering 2020年第4期17卷 633-643页

作者： Glen McHale rodrigo Ledesma-Aguilar Gary George Wells Smart Materials&Surfaces Laboratory Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon TyneNE18STUK

The problem of contact line pinning on surfaces is pervasive and contributes to problems from ring stains to ice *** we provide a single conceptual framework for interfacial strategies encompassing five strategies for modifying the solid-liquid interface to remove pinning and increase droplet *** biomimetic strategies are included,(i)reducing the liquid-solid interfacial area inspired by the Lotus effect,(ii)converting the liquid-solid contact to a solid-solid contact by the formation of a liquid marble inspired by how galling aphids remove honeydew,and(iii)converting the liquid-solid interface to a liquid-lubricant contact by the use of a lubricant impregnated surface inspired by the Nepenthes Pitcher *** further strategies are,(iv)converting the liquid-solid contact to a liquid-vapor contact by using the Leidenfrost effect,and(v)converting the contact to a liquid-liquid-like contact using slippery omniphobic covalent attachment of a liquid-like coating(SOCAL).Using these approaches,we explain how surfaces can be designed to have smart functionality whilst retaining the mobility of contact lines and ***,we show how droplets can evaporate at constant contact angle,be positioned using a Cheerios effect,transported by boundary reconfiguration in an energy invariant manner,and drive the rotation of solid components in a Leidenfrost heat *** conceptual framework enables the rationale design of surfaces which are slippery to liquids and is relevant to a diverse range of applications.

关键词： superhydrophobicity SLIPS liquid marbles leidenfrost SOCAL

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Tree encroachment into savannas alters soil microbiological and chemical properties facilitating forest expansion

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Journal of Forestry Research 2016年第5期27卷 1047-1054页

作者： Davi rodrigo Rossatto Everlon Cid Rigobelo Departamento de Biologia Faculdade de Ciencias Agrairias e veterinàrias Univ. Estadual Paulista UNESP Via de Acesso Prof. Paulo Donatto Castellane S/N Vila IndustrialJaboticabal - SP 14884-900 Brazil Departamento de Producao Vegetal Faculdade de Ciencias Agrairias e Veterinarias Univ. Estadual Paulista UNESP Viade Acesso Prof. Paulo Donatto Castellane S/N VilaIndustrial Jaboticabal - SP 14884-900 Brazil

Abstract Forests have been expanding over typical savanna sites for the past 3000 years in the Neotropics. Such invasion can produce a series of environmental modifications on typical savanna; however, it remains unclear how modifications in soil properties, caused by the encroachment of woody species, facilitate the expansion of forest ecosystems under dystrophic conditions. Here we examined chemical and microbiological changes associ- ated with tree encroachment in oxisols of a Neotropical Savanna at Assis Ecological Station, Southeastern Brazil. We predicted that tree encroachment caused by typical forest species would cause significant changes in the chemical and microbiological properties of savanna soils. Soils were sampled at Assis Ecological Station, from savanna sites differing in tree encroachment （typical, dense and forested savanna） caused by decades of fire exclusion. We analysed vegetation leaf area index and leaf litter volume deposited in the studied plots and chemical （pH,organic matter, P, K, Ca, Mg, A1, NO3-, NH4＋） and microbiological （microbial C biomass and dehydrogenase activity） properties of soils under distinct encroachment conditions. Most soil chemical properties did not change along the tree encroachment gradient; however, total P, soil organic matter, soil microbial C and dehydrogenase activity increased from typical savanna to forested savanna. The changes in soil organic matter and dehydrogenase activity were correlated with the values of leaf area index and litter volume along the encroachment gradient. Our results demonstrate that forest species can increase carbon and phosphorus supplies in tropical savanna soils.

关键词： Dystrophic Encroachment - Forest - Litter Microbiological activity

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Nexus security： governance, innovation and the resilient city

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Frontiers of Environmental Science & Engineering 2013年第5期7卷 640-657页

作者： Michael Bruce BECK rodrigo VILLARROEL WALKER Wamell School of Forestry and Natural Resources University of Georgia Athens GA 30602-2152 USA

Nexus security is a compound mix of ideas： reconciling human needs and wants with access to multiple resources; diversity of access to those resources and services; resilience in the face of weather- and climate- related variability; resilience likewise in the face of infrastructure failure; and the personal, individual sense of belonging. At the level of Systems Thinking there is a very close relationship between resilience in the behavior of natural （ecological） systems and resilience in the social dynamics of governance within communities, where such resilience establishes the viability of these communities over centuries, which in turn entails successful stewardship of the man-environment relationship. We use insights from this cross-system mapping -- across natural, built, and human systems -- to assess, first, the role of city governance in achieving nexus security （or not） and, second, the role of technological innovations in serving the same purpose. More specifically, eight principles, covering resilience and diversity of access to resources and services, are used to gauge security-enhancing features of city buildings and infrastructure. Case studies include new designs of resilient office blocks, nutrient （nitrogen and phosphorus） recovery systems for sanitation and waste- water treatment, and the reconstruction of urban parks for the provision of ecosystem services. Throughout the paper, matters of risk in the face of meteorological variability are prominent. We do not conclude, however, that the presence of risk implies nexus insecurity.

关键词： cities as forces for good climate variability,ecosystem services energy and nutrient recovery infrastructure failure urban metabolism

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Importance of ROS1 gene fusions in non-small cell lung cancer

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Cancer Drug Resistance 2023年第2期6卷 332-344页

作者： Meri Muminovic Carlos rodrigo Carracedo Uribe Andres Alvarez-Pinzon Khine Shan Luis E.Raez Department of Hematology-Oncology Memorial Cancer Institute/Memorial Health Care SystemFlorida International UniversityPembroke PinesFL 33028USA Department of Internal Medicine Memorial Health Care SystemFlorida International UniversityPembroke PinesFL 33028USA Office of Human Research Memorial Healthcare SystemPembroke PinesFL 33028USA

Targeted therapy has become one of the standards of care for advanced lung *** than 10 genetic aberrations have been discovered that are actionable and several tyrosine kinase inhibitors(TKIs)have been approved to target each of *** several genetic aberrations that are actionable in non-small cell lung cancer(NSCLC),ROS1 translocations also known as gene fusion proteins,are found in only 1%-2%of the patient ***1 mutations can usually be detected using a combination of techniques such as immunohistochemistry(IHC),Fluorescence in-situ testing(FISH),polymerase chain reaction(PCR),and nextgeneration sequencing(NGS).However,RNA NGS and ctDNA NGS(liquid biopsies)also contribute to the *** are currently numerous FDA-approved agents for these tumors,including crizotinib and entrectinib;however,there is in-vitro sensitivity data and clinical data documenting responses to ceritinib and *** responses and survival rates with these agents are frequently among the best compared to other TKIs with genetic aberrations;however,intrinsic or extrinsic mechanisms of resistance may develop,necessitating research for alternative treatment *** combat the mechanisms of resistance,novel agents such as repotrectenib,cabozantinib,talotrectinib,and others are being *** this article,we examine the literature pertaining to patients with ROS1 tumors,including epidemiology,clinical outcomes,resistance mechanisms,and treatment options.

关键词： ROS1 targeted therapy non-small cell lung cancer

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