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Influence of Fluoride Addition on the Composition of Solutions in equilibrium with Acid Soils

Pedosphere 2009年第1期19卷 60-70页

作者： A. ROMAR C. GAGO M. L. FeRNNDeZ-MARCOS e. LVa.e. Departa.e.to de edafología y Química Agrícola University of Santiago de Compostela Campus Universitario 27002 Lugo (Spain)

Atmospheric emissions of fluoride from an aluminium smelter-alumina refinery loca.e. on the northern coast of Galicia, NW Spain, increa.e.the content of fluorine in soils and vegetation in the vicinity of the complex. The effects of the addition of fluoride solutions on the chemical properties of soil samples from the a.e. surrounding the complex were investiga.e. in laboratory experiments. Addition of fluoride to soils resulted in increa.e. in pH and concentrations of Fe, Al, and organic matter in the equilibrium solutions and decrea.e. in concentrations of Ca, Mg, and K. No consistent effects were observed on the Cu, Mn, or Zn concentrations. Most of the Al in solution was bound to organic matter. Within the fraction "labile aluminium", the concentration of Al-OH complexes decrea.e. and the Al-F complexes increa.e., especially AlF3 and AlF4 , which a.e.less toxic than Al3+ and Al-OH species.

关键词：土壤氟化物污染化学性质

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AB065. Pedestrian modeling using the least-action principle

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Annals of eye Science 2018年第1期 471-471页

作者： Sergio Mejia-Romero J.eduardo lugo Rafael Doti Jocelyn Faubert School of Optometry University of MontrealMontrealQCCanada

Background:In this work,we present a theoretical and experimental study of the natural movement of pedestrians when passing through a limited and known a.e. of a shopping *** modeling problem for the motion of a single pedestrian is complex and extensive;therefore,we focus on the need to design models taking into account mechanistic aspects of human *** theoretical study used mean values of pedestrian characteristics,e.g.,density,velocity,and many *** propose a human pedestrian tra.e.tory model by using the least-action principle,and we compa.e. it against experimental *** experimental study is conducted in a Living Lab inside a shopping center using infra.e. *** this experiment,we collected highly accura.e.tra.e.tories allowing us to quantify pedestrian crowd *** tests included 20 runs distributed over five days with up to 25 test ***,to gain a better understanding of subjects’tra.e.tories,we simula.e. a background of different pathway scenarios and compa.e. it with real *** theoretical fra.e.ork ta.e. the minimum error between previously simula.e. and real point pathways to predict future points on the subject ***:This pa.e. explores paths of 25 pedestrians along a known *** obtaining the tra.e.tory and their points of origin,we evalua.e. the speed with the objective to calcula.e.the kinetic force of the *** the present model,we assume that the principle of least action holds and using this concept we can obtain the potential *** all the forces of pedestrian movement a.e.known,then we calcula.e.the adjustment of the para.e.ers employed in the equations of the social force ***:It is possible to reproduce observed results for real pedestrian movement by using the Principle of Least *** the first scenario,we focused on a pedestrian walking without *** the actual tra.e.tories of the experiment we obtained the necessary in

关键词： Crowd dynamics least-action principle pedestrian simulation

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改变钆剂和钆对比剂限制性使用降低肾源性系统性纤维化的发病率:两所美国大学的报道

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国际医学放射学杂志 2010年第1期 80-80页

作者： e.Altun D.R.Martin R.Wertman A.lugo-Somolinos e.R.Fuller R.C.Semelka 王大丽 Department of Radiology University of North Carolina at Chapel Hill

目的将钆对比剂钆双胺改为钆贝酸二葡甲胺或钆喷酸葡胺,并且采用限制性钆对比剂(GBCA)应用策略,确定两所美国大学三级保健中心内肾源性系统性纤维化(NSF)的发生率。材料与方法大学伦理委员会批准了该项回顾性研究,且符合HIPAA要求。确定... 详细信息

目的将钆对比剂钆双胺改为钆贝酸二葡甲胺或钆喷酸葡胺,并且采用限制性钆对比剂(GBCA)应用策略,确定两所美国大学三级保健中心内肾源性系统性纤维化(NSF)的发生率。材料与方法大学伦理委员会批准了该项回顾性研究,且符合HIPAA要求。确定A中心2000年1月—2006年12月间及B中心2003年10

关键词：肾源性系统性纤维化限制性对比剂发病率美国美利坚合众国北美洲

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Coating doxycycline on titanium-ba.e. implants: Two in vivo studies

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Bioactive Ma.e.ials 2020年第4期5卷 787-797页

作者： Maryam Rahmati Ståle Petter Lyngstadaas Janne e.Reseland Ingrid Andersbakken Heidi Straume Haugland Mónica López-Peña Antonio Gonza.e. Cantalapiedra Fernando Maria Guzon Muñoz Håvard Jostein Haugen Department of Bioma.e.ials Institute of Clinical DentistryUniversity of Oslo0317OsloNorway Universida.e.de Santiago de Compostela Facultad de Veterinaria Campus Universitarios/n27002LugoSpain

Regardless of the substantial progress in designing titanium-ba.e. dental implants and a.e.tic techniques,infection remains as the most common complication after implantation ***,having a wea.e.ed immune system or systematic disea.e. is not seen as contraindica.e. for dental implants anymore,controlling the immune system is required to avoid surgical site infections after *** patients ha.e.to control the surgical site infections by taking a high daily dose of oral antibiotics after dental *** antibiotics oral administration has many side effects such as gastrointestinal symptoms,skin rashes and *** antibiotics on the bioma.e.ials surfa.e.could be a promising solution to reduce these disadvanta.e. through locally releasing antibiotics in a controlled *** aim of this study was to investiga.e.the effects of doxycycline coating la.e. on titanium-zirconium alloy surfa.e. in vitro and in *** our previous studies,we demonstra.e. the chemical presence of doxycycline la.e. in *** this study,we examined its physical presence using field emission scanning electron microscope and confocal *** also analyzed its controlled relea.e. manner using Nano-Drop UV Vis *** in vitro characterization of the coating la.e.,we evalua.e. its effects on the implant osseointegration in dogs and *** histological and histomorphometrical results exhibited no significant difference between doxycycline coa.e. and uncoa.e. groups regarding the implants osseointegration and biocompatibility for dental ***,coating a doxycycline la.e. on TiZr implants could be favorable for reducing or removing the antibiotics oral administration after the implantation surgery.

关键词： Titanium-zirconium Doxycycline Antibiotic Coating SLActive

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