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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

A note on the consistency of a behavioral play marker in piglets

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Journal of Animal Science and Biotechnology 2014年第2期5卷 245-250页

作者： Wendy mercedes Rauw Departamento de Mejora Genetica Animal Instituto Nacional de Investigaciony Tecnologia Agrariay AlimentariaCrtadela Corunakm 7.5Madrid 28040Spain

Background： Play behavior has been proposed as a new potential indicator of animal welfare. Animals play only if they are in a relaxed state. Play may improve adaptability to challenging environments which may be of interest in the breeding objective. Little information is available on play behavior in livestock species. The aim of the present study is to investigate whether play behavior in post-weaned piglets can be induced instantly in the presence of additional space and whether play markers are body weight, sex, and litter dependent, it is investigated whether playfulness is elicited by the moment or if this measure is consistent over different days. Methods： Thirty two piglets from four litters were released into a corridor and video recorded for eight min at 37, 41, 44 and 48 d of age. The first test was considered as an adjustment period and was not included in the analysis. In the second to the fourth test, joyful brusque movements （jumping, turning and running） were recorded with a camera and total number of movements （JOY#） and total time （JOYtime） were estimated individually. Animals were weighed at 41 d of age. Results： Females had higher scores of JOY# and JOYtime than males but this was significant only for JOY# at 41 d of age （P 〈 0.05）. The effect of age was highly significant both for JOY# and JOYtime （P 〈 0.01）. Animals with a higher JOY# and JOYtime also expressed a higher JOY# and JOYtime in the other tests, but this was significant only between 44 and 48 d of age （P〈 0.01）. Body weight at 41 d of age was not significantly related to JOY# and JQYtime in any of the tests. Conclusions： Locomotor play was induced instantly by the provision of increased space allowance. Litter origin had a significant effect on play behavior. In addition, locomotor play scores were consistent between two of the three tests.

关键词： Behavior Locomotor play Pigs Play marker Welfare

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Tourism versus nature conservation: reconciliation of common interests and objectives——an analysis through Picos de Europa National Park

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Journal of Mountain Science 2018年第11期15卷 2505-2516页

作者： LóPEZ Iván PARDO mercedes Department of Psychology and Sociology University of Zaragoza Department of Social Analysis University Carlos Ⅲ of Madrid

Nature tourism and particularly tourism in national parks have acquired significant importance in contemporary societies. Post-Fordist consumers have reevaluated the meanings of ‘nature' and ‘natural spaces' and now avoid standardization to seek singularity. Tourism in national parks is a consequence of this tendency and has both positive and negative aspects. The purpose of this sociological research is to describe the most relevant conflicts in the Picos de Europa National Park(Spain) involving the park's conservation, local economic development,and tourism. Seven in-depth interviews and three focus groups were addressed to key local *** this research were identified three chief areas of existing or potential inter-related conflicts and the main actors interacting with them. The first is on population, particularly, the negative consequences of depopulations on the local socio-economic development and the environment. A second source of conflicts identified is caused by the difficult conciliation between commercial exploitation and conservation of the protected natural area. More precisely, this specific form of tourism positively contributes to the economy of local communities whilst problems can arise for the conservation goals of National Parks. Thirdly, in this research is also analyzed the institutional governance and the inter and intra-governmental conflicts as well as with the Park's management body. These findings provide important information for the improved management of tourism and conflicting interests in natural parks.

关键词： National parks Environmental conservation Nature tourism Mountain traditional economy Picos de Europa Spain

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The Maximal Graded Left Quotient Algebra of a Graded Algebra

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Acta Mathematica Sinica,English Series 2006年第1期22卷 261-270页

作者： Gonzalo ARANDA PINO mercedes SILES MOLINA Departamcnto de Algebra Geometriay Topologia Universidad de Mdlaga 29071 Mdlaga Espana

We construct the maximal graded left quotient algebra of every graded algebra A without homogeneous total right zero divisors as the direct limit of graded homomorphisms （of left A-modules） from graded dense left ideals of A into a graded left quotient algebra of A. In the case of a superalgebra, and with some extra hypothesis, we prove that the component in the neutral element of the group of the maximal graded left quotient algebra coincides with the maximal left quotient algebra of the component in the neutral element of the group of the superalgebra.

关键词： graded algebra graded left quotient algebra maximal graded left quotient algebra left quotieat algebra maximal left quotient algebra superalgebra

Dietary(poly)phenol intake is associated with cardiometabolic health parameters in adolescents

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Food Science and Human Wellness 2024年

作者： Emily P.Laveriano-Santos Sara Castro-Barquero Camila Arancibia-Riveros Ana María Ruiz-León Rosa Casas Ramón Estruch Patricia Bodega mercedes de Miguel Amaya de Cos-Gandoy Jesús Martínez-Gómez Gloria Santos-Beneit Juan M.Fernández-Alvira Rodrigo Fernández-Jiménez Rosa M.Lamuela-Raventós Anna Tresserra-Rimbau The Zena and Michael A.Wiener Cardiovascular Institute， Icahn School of Medicine at Mount Sinai Department de Nutrició， Ciències de l'Alimentació I Gastronomia， XIA， Facultat de Farmàcia i Ciències de l'alimentació， Institut de Recerca en Nutrició i Seguretat Alimentària (INSA-UB)， Universitat de Barcelona Department of Internal Medicine， Hospital Clínic， Institutd'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS)， University of Barcelona Consorcio CIBER， M.P.Fisiopatología de la Obesidad y Nutrición (CIBERObn)， Instituto de Salud Carlos III (ISCIII) Mediterranean Diet Foundation 5. Foundation for Science， Health and Education (SHE) 6. Centro Nacional de Investigaciones Cardiovasculares (CNIC) CIBER de Enfermedades Cardiovasculares (CIBERCV) 9. Hospital Universitario Clínico San Carlos

Background: The protective role of (poly)phenols against metabolic disorders has been extensively studied in adults but not in ***: To assess associations of dietary (poly)phenols and their subclasses with cardiometabolic health parameters in adolescents. Methods: A cross-sectional study was conducted in 944 individuals aged 11 to 14 years enrolled in the SI! Program for Secondary Schools trial (NCT03504059). (Poly)phenol intake was assessed using semi-quantitative food frequency questionnaires and the Phenol-Explorer database. The measured cardiometabolic parameters were waist circumference (WC) age-sex z-score， blood pressure (BP) age-sex z-score， blood glucose (BG)， triglycerides (TG)， and high-density lipoprotein cholesterol (HDL-c). Multilevel mixed-effect linear regression models were applied to examine the association between (poly)phenol quintiles and cardiometabolic health ***: Compared to the lowest quintile， adolescents in the highest quintile of total (poly)phenol intake had lower WC z-scores (β=-0.09， 95%CI=-0.09;-0.08， P-for trend=0.002)， mean arterial pressure z-scores (β =-0.11， 95%CI=-0.12;-0.09， P-for trend=0.206)， and HDL-c (β=-1.52， 95%CI=-2.90;-0.14， P-for trend=0.108)， after multivariable adjustment. The WC z-scores (β=-0.11， 95%CI=-0.19;-0.03， P-for trend=0.013) and HDL-c (β=-2.16， 95%CI=-3.78;-0.53， P-for trend=0.046) were lower in the highest quintile of flavonoid intake compared to the lowest quintile. The highest quintile of phenolic acid intake was associated with a lower WC z-score (β=-0.14， 95%CI=-0.26;-0.02， P-for trend=0.011) and TG levels (β=-8.83， 95%CI=-12.37;-5.30， P-for trend <0.001)， and the highest quintile of stilbene intake with lower BG (β=-1.83， 95%CI= -3.103;-0.64， P-for trend <0.001) and TG (β=-3.22， 95%CI= -4.95;-1.49， P-for trend=0.034)， and with higher HDL-c (β=2.328， 95%CI= 1.40;3.17， P-for trend=0.466) compared to the lowest quintile. Conclusion: A higher intake of (poly)phenols， espe

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The potential leaching and mobilization of trace elements from FGD-gypsum of a coal-fired power plant under water re-circulation conditions

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Journal of Environmental Sciences 2015年第6期27卷 72-80页

作者： Patricia Córdoba Iria Castro mercedes Maroto-Valer Xavier Querol Centre for Innovation on Carbon Capture and Storage Institute of Mechanical Process and Energy Engineering Heriot-Watt University Institute of Environmental Assessment and Water Research

Experimental and geochemical modelling studies were carried out to identify mineral and solid phases containing major, minor, and trace elements and the mechanism of the retention of these elements in Flue Gas Desulphurisation（FGD）-gypsum samples from a coal-fired power plant under filtered water recirculation to the scrubber and forced oxidation conditions. The role of the p H and related environmental factors on the mobility of Li, Ni, Zn, As, Se, Mo, and U from FGD-gypsums for a comprehensive assessment of element leaching behaviour were also carried out. Results show that the extraction rate of the studied elements generally increases with decreasing the p H value of the FGD-gypsum leachates. The increase of the mobility of elements such as U, Se, and As in the FGD-gypsum entails the modification of their aqueous speciation in the leachates; UO2SO4, H2 Se, and HAs O2 are the aqueous complexes with the highest activities under acidic *** speciation of Zn, Li, and Ni is not affected in spite of p H changes; these elements occur as free cations and associated to SO4 ^2 in the FGD-gypsum leachates. The mobility of Cu and Mo decreases by decreasing the p H of the FGD-gypsum leachates, which might be associated to the precipitation of Cu Se2 and Mo Se2, respectively. Time-of-Flight mass spectrometry of the solid phase combined with geochemical modelling of the aqueous phase has proved useful in understanding the mobility and geochemical behaviour of elements and their partitioning into FGD-gypsum samples.

关键词： Geochemical modelling studies Trace elements Leaching Landfills FGD-gypsum ToF mass spectrometry

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Gastric mucosa-associated lymphoid tissue lymphomas and Helicobacter pylori infection:A Colombian perspective

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World Journal of Gastroenterology 2012年第7期18卷 685-691页

作者： Sally Yepes Maria mercedes Torres Carlos Saavedra Rafael Andrade Institute of Genetics Universidad Nacional de Colombia14490 Bogotá DCColombia Department of Pathology Fundación Santa Fe de Bogotá220246 Bogotá DCColombia Human Genetics Laboratory Universidad de los Andes4976 Bogotá DCColombia Faculty of Medicine Universidad Nacional de Colombia14490 Bogotá DCColombia

AIM： To assess the significance of chromosome translo- cation t（11;18）（q21;q21）, B-cell lymphoma 10 （BCL-10） protein and He/icobacter py/ori （H. py/on） infection in gastric mucosa-associated lymphoid tissue ... 详细信息

关键词： Mucosa-associated lymphoid tissue lympho-ma Helicobacter pylori Treatment t(11 18)(q21 q21 ) B-cell lymphoma 10

Lichen species dominance and the resulting photosynthetic behavior of Sonoran Desert soil crust types(Baja California,Mexico)

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Ecological Processes 2013年第1期2卷 64-72页

作者： Burkhard Büdel mercedes Vivas Otto L Lange Plant Ecology and Systematics Biology DepartmentUniversity of KaiserslauternP.O.Box 3049D-67653KaiserslauternGermany Department of Plant Science Faculty of PharmacyUniversidad Complutense de Madrid Plaza Ramóny Cajal28040MadridSpain Julius-von-Sachs-Institut für Biowissenschaften University of WürzburgJulius-von-Sachs-Platz 3D-97082WürzburgGermany.

Introduction:Lichen dominated biological soil crusts(BSCs)occur over large areas in the Sonoran Desert of the southwestern USA and northwest *** Baja California BSCs show a distinct patchiness and several types can be *** chlorolichen-and two cyanolichen-dominated BSCs were *** hypothesize that patchiness and the resulting domination of certain functional lichen groups will result in patchiness of photosynthetic CO_(2)-uptake related to environmental factors as ***:Four different soil crust samples were placed in cuvettes and their CO_(2) exchange was recorded in an open system with an infrared gas *** blown over the BSCs had a controlled CO_(2) content of 350 *** cuvettes were operated in *** CO2 exchange was continually recorded throughout the ***:Besides the dominating chlorolichens Psora decipiens and Placidium squamulosum and the cyanolichens Peltula patellata and ***,several other lichen species and 12 cyanobacterial species were found in the biological soil crusts *** chlorolichen BSCs already gained positive net photosynthesis with high air humidity alone,while the cyanolichen types did not,but showed smaller CO_(2)-uptake depression after water *** specific net photosynthesis responses to mode of hydration and to crust water content seem to correlate with precipitation characteristics of their ***:Species specific photosynthetic performance related to activation of respiration and net photosynthesis as well as to crust water content help to explain niche occupation and species composition of *** functional types have to be considered when they have a patchy distribution.

关键词： Biological soil crust Lichens Cyanobacteria Photosy

Colorectal cancer population screening programs worldwide in 2016: An update

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World Journal of Gastroenterology 2017年第20期23卷 3632-3642页

作者： mercedes Navarro Andrea Nicolas Angel Ferrandez Angel Lanas Service of Digestive Diseases University Clinic Hospital Lozano Blesa University of Zaragoza Aragón Health Research Institute (IIS Aragón) CIBERehd

Colorectal cancer(CRC)is the third most commonly diagnosed cancer in the *** incidence and mortality show wide geographical *** is recommended to reduce both incidence and ***,there are significant differences among studies in implementation strategies and *** review aimed to present the results and strategies of different screening programs *** reviewed the literature on national and international screening programs published in Pub Med,on web pages,and in clinical *** Screening programs are currently underway in most European countries,Canada,specific regions in North and South America,Asia,and *** most extensive screening strategies were based on fecal occult blood testing,and more recently,the fecal immunochemical test(FIT).Participation in screening has varied greatly among different *** Netherlands showed the highest participation rate(68.2%)and some areas of Canada showed the lowest(16%).Participation rates were highest among women and in programs that used the FIT *** exhibited the greatest number of positive *** FIT test has been the most widely used screening program *** advent of this test has increased participation rates and the detection of positive results.

关键词： Colorectal cancer Colorectal cancer screening Fecal occult blood test Fecal immunochemical test Colonoscopy