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An evaluation of mass,number concentration,chemical composition and types of particles in a cafeteria before and after the passage of an antismoking law

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Particuology 2013年第5期11卷 527-532页

作者： Jorge Pey Barend L.van Drooge Anna Ripollb Teresa Moreno Joan O.Grimalt Xavier Querol andres Alastuey Department of Epidemiology Lazio Regionvia S.Costanza5300198 RomeItaly Institute of Environmental Assessment and Water Research.ID/EA-CSIC C/Jordi Girona.18-2608034 BarcelonaSpain

This study assessed air quality indicators before and after enactment of the Spanish anti-smoking law. Mass and number concentrations and the chemical composition of particles were evaluated. Microscopy analyses were also conducted. Real time concentrations of PMlo, PM2.s, PM1 and ultrafine particles were measured under ventilated and non-ventilated conditions and PMlo samples were collected for detailed inorganic and organic chemical characterization. Before enactment of the law in 2010, tobacco smoke produced significant indoor ambient particulate matter pollution, with elevated particulate matter mass concentrations （PM10 and PM1 concentrations of 122-220 and 48-85 Dg/m3, respectively） and ultrafine particle numbers （75,000 and 48,000 cm ~ under ventilated and non-ventilated conditions, respectively）. Typical tobacco smoke tracers including iso- and anteiso-alkanes and elements including La and Ce from the ignition of lighters were abundant. Additionally, several toxic substances derived from tobacco smoke, including Cd （3.1 ng/m3） and benzo[a]pyrene （1.0 ng/m3） were present at concentrations approximately 10 times greater than those measured after enactment of the anti-smoking law. The anti-smoking law sig- nificantly reduced exposure to potentially toxic compounds by approximately 90%. This law is expected to have a positive health impact, particularly for people who spend considerable time in affected envi- ronments, such as employees.

关键词： Indoor airParticulate matterUltrafine particlesNucleationCoagulation-condensationEnvironmental tobacco smoke

A valve-in-valve approach to manage severe bioprosthetic tricuspid valve stenosis

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Journal of Geriatric Cardiology 2021年第5期18卷 400-402页

作者： Dominika M Zoltowska Naji Maaliki Bashar Al-Turk andres M Pineda Maldonado Srinivasan Sattiraju Cardiology University of Florida College of Medicine-JacksonvilleFloridaUSA Internal Medicine University of Florida College of Medicine-JacksonvilleFloridaUSA

severe symptomatic tricuspid stenosis often requires *** the etiology is bioprosthetic valve failure,a challenging situation is *** valve replacement is the gold standard of treatment for severe tricuspid valve(TV)disease.[1]However,a redo sternotomy is rarely performed for isolated TV disease due to very high perioperative mortality.[2]Evolving percutaneous technology presents new frontiers in treatment,with the valveinvalve procedure emerging as an *** present a case of a 65year woman with progressive symptoms due to failure of a bioprosthetic valve in the tricuspid position who was not a surgical candidate but underwent percutaneous intervention with significant clinical improvement.

关键词： tricuspid stenosis mortality

Implications of Withaferin A in neurological disorders

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Neural Regeneration Research 2021年第2期16卷 304-305页

作者： Natasha Ram Stephanie L.Peak andres R.Perez Umesh K.Jinwal Department of Pharmaceutical Sciences Taneja College of PharmacyUniversity of South FloridaTampaFLUSA

Extract from the medicinal herb Withania somnifera(WS),commonly known as Ashwagandha,has therapeutic implications in various conditions such as infection,inflammation,cancer,stress,neurodegenerative diseases,heart dis... 详细信息

关键词： inflammation diseases infection

Analysis and Validation for an Inverter-side Current Controller in LCL Grid-connected Power Systems

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Journal of Modern Power Systems and Clean Energy 2020年第2期8卷 387-398页

作者： Jose MSosa Panfilo R.Martinez-Rodriguez Gerardo Escobar Gerardo Vazquez andres A.Valdez-Fernandez Juan F.Martinez-Garcia the Tecnologico Nacional de Mexico/ITS de Irapuato(TecNM/ITESI) IrapuatoGTO 36821Mexico the School of Sciences Autonomous University of San Luis Potosi(UASLP)San Luis PotosiSLP 78290Mexico Tecnologico de Monterrey N.L.64849Mexico

Transformerless grid-connected inverters offer greater efficiencies when transferring power from renewable energy sources to the electrical *** the grid-inverter connection is done with an LCL filter,high attenuation of switching harmonics is achieved while preserving a small-size output ***,damping must be included in the controller to assure closed-loop *** paper proposes a reference computation methodology for the inverter-side current feedback in a photovoltaic(PV)generation system connected to the grid through an LCL *** analysis of the closed-loop system stability and of the steady-state performance are presented as well as experimental validation of the closed-loop *** feedback controller includes active damping and relies on a resonant control structure which improves the ability of dealing with grid harmonic *** controller uses a reduced set of measurements,which requires the inverter-side current and grid voltage only,and assures a power factor close to unity.

关键词： LCL filter transformerless inverter grid connection inverter-side current feedback

QUALITATIVE ANALYSIS OF SUSTAINABLE VERTICAL DWELLING IN NUEVO LEON, MEXICO

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Journal of Green Building 2011年第1期6卷 58-72页

作者： Pedro Morales Juan P.Solis andres Trillo Salvador Garcia Civil Engineering Department.ITESM Monterrey Campus ITESM Monterrey Campus GGP

Climate change has become a big concern nowadays since the effects of fluctuation in the weather are more notable every *** Mexico construction industry generates around 33%of the countries CO_(2) emissions,and 7.64%amount for housing *** Vertical Dwelling was considered as a suitable solution to cover the housing shortage and lower the impact to the *** assessment of awareness of sustainability was carried out in the housing sector including government,developers and *** interviews were designed one for each kind of *** with the outcome of the interviews,guidelines to address sustainability in the housing sector were *** ongoing project was selected and a qualitative comparison analysis was established,making green improvements and discussing the impact of such *** an outcome we observed that sustainability is getting attention from the government and *** Housing Found has launched the Green Mortgage to promote green housing for the low income families,this program could be expanded to higher income classes and for vertical *** is not a proper regulatory framework for the condominium regimen neither for the construction of green dwellings,thus,problems arise for the condominium *** developers are implementing some green features on their projects,but not as a mean to address sustainability,but as a marketing ***,vertical dwelling represents a greener way to build by the fact that it requires less land space,vacant lands within urban areas can be recovered,thus the use of existing infrastructure and services make the projects efficient and less expensive.

关键词： sustainability vertical dwelling condominium

Physical model experiments for sediment supply to the old Rhine through induced bank erosion

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International Journal of Sediment Research 2013年第4期28卷 431-447页

作者： andres DIE MORAN Kamal EL KADI ABDERREZZAK Erik MOSSELMAN Helmut HABERSACK Franck LEBERT Denis AELBRECHT Eric LAPERROUSAZ EDF R&D and Saint-Venant Laboratory for Hydraulics Deltares and Delft University of Technology BOKU University of Natural Resources and Life Sciences EDF-CIH Savoie Technolac

A mobile-bed,undistorted physical model(1:40) has been used to investigate different sediment supply strategies to the Old Rhine through bank protection removal and modifications of groyne dimensions and configuration,which cause bank *** trained channel was previously the main bed of the upper Rhine downstream of Basel(Switzerland),but it has an artificially low flow regime since the construction of the Grand Canal d’Aisace,a navigation canal,and a flow control dam at Kembs(France).Training works and subsequent channel incision have also greatly reduced sediment transport rates and created a heavily armoured *** modelled pilot site has a groyne field on the left *** show that the currently existing groynes at the site are not effective in creating high bank-side velocities conducive to bank erosion,even for flow rates significantly higher than the mean annual How *** river bank has also proved to be more resistant than previously thought,allowing long stretches of bank protection to be safely *** physical model testing process has produced a new configuration for the groyne field,where two higher,larger island groynes are placed further apart than the three existing attached *** innovative approach has proved effective,causing bank erosion for flow rates below the mean annual flow rate,with consistent erosion being *** has also been found that such a configuration does not pose a hazard for the Grand Canal d’Aisace,which is situated next to the Old Rhine,through excessive bank erosion during high flow events.

关键词： Old Rhine Physical model Sediment transport Groyne Bank erosion

Differential effects of adulterated versus unadulterated forms of linoleic acid on cardiovascular health

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Journal of Integrative Medicine 2013年第1期11卷 2-10页

作者： Stephen D. Anton Kacey Heekin Carrah Simkins andres Acosta Department of Aging and Geriatric Research University of FloridaGainesville Florida 32611 USA Department of Medicine University of FloridaGainesville Florida 32611 USA

According to the classic ＂diet-heart＂ hypothesis, high dietary intake of saturated fats and cholesterol combined with low intake of polyunsaturated fats can increase levels of serum cholesterol and lead to the development of atherogenic plaques and ultimately cardio- vascular diseases. Recently, the beneficial health effects of omega-6 polyunsaturated fatty acids, particularly linoleic acid （LA）, on cardiovascular health have been called into question with some scientists suggesting that consumption of LA should be reduced in Western countries. The focus of this critical review is on the controversy surrounding the effects of dietary intake of LA on cardiovascular health. Specifically, we critically examined the effects of both unadulterated and adulterated forms of LA on cardiovascular health outcomes based on findings from epidemiological studies and randomized controlled trials. Additionally, we address common concems surrounding dietary intake of LA regarding its relationship with arachidonic acid, the ratio of omega-6 to omega-3 fatty acids, and its relationship with inflammation. Our critical review indicates that unadulterated forms of LA are cardioprotective and should be consumed as part of a healthy diet. In contrast, abundant evidence now indicates that adulterated forms of LA, predominantly hydrogenated vegetable oils, are atherogenic and should not be considered part of a healthy diet. The ability to adulterate the natural omega-6 fatty acid, LA, has contributed to mixed findings regarding the effects of this fatty acid on cardiovascular health. Thus, it is critical that the source of LA be taken into account when drawing conclusions about the physiological effects of this fatty acid. The findings of the present review are in line with current dietary recommendations of the American Heart Association.

关键词： diet fatty acids linoleic acids cardiovascular diseases review

Queens remate despite traumatic mating in stingless bees

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Current Zoology 2022年第1期68卷 81-92页

作者： Jamille Costa VEIGA Gustavo Rodrigo Sanches RUIZ Gislene Almeida CARVALHO-ZILSE Cristiano MENEZES Felipe andres Leon CONTRERA Bee Biology and Ecology Lab Instituto de Ciencias BiologicasUniversidade Federal do ParaBelem66075-110 ParaBrazil Biodiversity and Ecosystem Services Research Group Instituto Tecnologico Vale-Desenvolvimento SustentavelBelem66055-090 ParaBrazil Ecology and Zoology of Invertebrates Lab Instituto de Ciencias BiologicasUniversidade Federal do ParaBelem66075-110 ParaBrazil Bee Research Group Instituto Nacional de Pesquisas da AmazoniaManaus69067-375 AmazonasBrazil Research and Development Embrapa Meio AmbienteJaguariuna13820-000 Sao PauloBrazil

Males can control female reproduction using genital plugs to impede access by *** social bees,ants,and wasps,plugging may involve traumatic mating,with females being *** stingless bees,chances are that plugs may promote ovarian activan,and are thought to ensure single mating—a general tendency among the social ***,understanding on relationships between mating plugs,traumatic mating,and mating systems in stingless bees remains *** address this,we(1)compared mated queens of 7 Neotropical species to understand the patterns of copulatory marks in females and(2)compared pre-and post-mating genitalia of males and females in Melipona fasciculata to depict plug functional *** revealed an unprecedented consequence of mating in stingless bees:the characteristic marks left by mating plugs on female abdomens and the inferences that can be made from *** our surprise,in 1 species *** we found that queens retain the plug long after mating,and may carry it for the rest of their *** the other 6 species retained the plug for only a short *** queens were only found in ***,whose multiple copulatory marks match previous findings of polyandry in this *** study shows that queens can remate,and suggests that male genital morphology may determine in part the time persistence of *** conclude that traumatic mating plugs do not fully prevent remating in stingless bees and that mating systems are not uniform in this ***,exceptional cases of facultative polyandry in social insects—for example,when mating plugs fail—may confirm a general tendency for single mating in close link with efficient mating plugs.

关键词： copulatory marks facultative polyandry genital morphology male harm sexual conflict

Ionic Species Affect the Self-Propulsion of Urease-Powered Micromotors

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Research 2020年第1期2020卷 349-362页

作者： Xavier Arque Xavier andres Rafael Mestre Bernard Ciraulo Jaime Ortega Arroyo Romain Quidant Tania Patino Samuel Sanchez Institute for Bioengineering of Catalonia(IBEC) The Barcelona Institute of Science and Technology(BIST)Baldiri i Reixac 10-1208028 BarcelonaSpain Institute of Photonic Sciences(ICFO) The Barcelona Institute of Science and TechnologyCarl Friedrich Gauss 308860 CastelldefelsBarcelonaSpain InstitucióCatalana de Recerca i Estudis Avançats(ICREA) Pg.Lluís Companys 2308010 BarcelonaSpain Chemistry Department University of RomeTor VergataVia della Ricerca Scientifica00133 RomeItaly

Enzyme-powered motors self-propel through the catalysis of in situ bioavailable fuels,which makes them excellent candidates for biomedical ***,fundamental issues like their motion in biological fluids and the understanding of the propulsion mechanism are critical aspects to be tackled before a future application in ***,we investigated the physicochemical effects of ionic species on the self-propulsion of urease-powered *** showed that the presence of PBS,NaOH,NaCl,and HEPES reduced self-propulsion of urease-powered micromotors pointing towards iondependent mechanisms of *** studied the 3D motion of urease micromotors using digital holographic microscopy to rule out any motor-surface interaction as the cause of motion decay when salts are present in the *** order to protect and minimize the negative effect of ionic species on micromotors’performance,we coated the motors with methoxypolyethylene glycol amine(mPEG)showing higher speed compared to noncoated motors at intermediate ionic *** results provide new insights into the mechanism of urease-powered micromotors,study the effect of ionic media,and contribute with potential solutions to mitigate the reduction of mobility of enzyme-powered micromotors.

关键词： holographic salts catalysis