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Studying the stress-suction coupling in soils using an oedometer equipped with a high capacity tensiometer

Frontiers of Structural and Civil Engineering 2011年第2期5卷 160-170页

作者： Trung Tinh LE Yu-Jun CUI juan jorge muñoz Pierre DELAGE Anh Minh TANG Xiang-Ling LI Ecole des ponts ParisTech Navier/CERMES6-8av.B.PascalCitéDescartesChamps-sur-Marne77455 Marne-la-Vallée cedex 2France The China Three Gorges University Yichang 443002China EURIDICE Group c/o SCK./CENBoeretang 2002400 MolBelgium

In the context of research into deep nuclear waste disposal,various works have concerned the hydromechanical behavior of Boom clay,a stiff plastic clay extracted in the SCK-CEN Underground Research Laboratory near the Mol City(Belgium),at a depth of 223 *** to some amount of smectite minerals in the clay fraction,Boom clay exhibits swelling properties when hydrated under low *** investigate some aspects of the hydromechanical behavior of Boom clay,oedometer compression tests were carried out on samples of Boom clay close to saturation and submitted to an initial *** oedometer compression,the changes in suction with increased vertical stress are monitored by means of a high capacity tensiometer installed at the bottom of the *** aspects related to hydromechanical couplings are examined through the investigation of the changes in suction during oedometer compression,a somewhat delicate and poorly documented experimental approach.A comparison is also made with a completely different soil sample under suction,i.e.a statically compacted unsaturated low plasticity *** technical difficulties typical of this new experimental approach are first described in detail so as to optimize the interpretation of the data *** experiment allows the determination of the point at which suction is changed to positive pressure during *** this point,the ratio between the vertical stress and the change in suction are *** this point,the data show that positive pore pressures are dissipated in a common *** suction/stress behavior during unloading is also described and ***,an interpretation in terms of microstructure effects is provided for both *** experimental approach initiated here seems to provide interesting further application to better understand hydromechanical couplings in natural soils in relation with suction increase during stress release.

关键词： Oedometer tensiometer swelling physicochemical and mechanical effects stress/suction coupling soil plasticity

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Experience with the surgical treatment of hepatic hydatidosis: Case series with follow-up

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World Journal of Gastroenterology 2010年第26期16卷 3305-3309页

作者： Hector Losada Morales Luis Burgos San juan jorge Silva Abarca Cesar muoz Castro Department of Surgery Universidad de La Frontera Hepato Pancreatic and Biliary Surgery Hospital Hernán Henríquez Aravena Department of Surgery Clínica Alemana de Temuco

AIM: To describe patient characteristics and the results of surgical treatment for hepatic hydatidosis (HH) in the Hospital Hernán Henríquez Aravena from December 2001 to March 2005. METHODS: Subjects older than 16 years with suspected HH were included based on the clinical picture and radiological studies. Variables examined included clinical and laboratory aspects, outcome, features of the parasite and surgical aspects. Descriptive statistics were used, calculating central tendency, dispersion and extreme tendency. RESULTS: The series was comprised of 122 patients, with an average age of 44 ± 16.9 years. The most frequently used surgical technique was subtotal cys-tectomy in 90% of the patients, followed by hepatic resection (hepatectomy, segmentectomy and subsegmentectomy) in 5%. In 2%, a combination of subtotal cystectomy and segmentectomy was performed. In addition, 28% of the series presented complications in the postoperative period and mortality was 2%. CONCLUSION: The most frequently used surgical technique for HH was subtotal cystectomy and the morbidity and mortality rates in this Chilean series are comparable to other national and international series.

关键词： Echinococcosis of liver Surgery Cases series Mortality Morbidity

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Management of nonalcoholic fatty liver disease:An evidence-based clinical practice review

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World Journal of Gastroenterology 2014年第34期20卷 12182-12201页

作者： juan P Arab Roberto Candia Rodrigo Zapata Cristián mu?oz juan P Arancibia Jaime Poniachik Alejandro Soza Francisco Fuster Javier Brahm Edgar Sanhueza jorge Contreras M Carolina Cuellar Marco Arrese Arnoldo Riquelme Departamento de Gastroenterología Escuela de MedicinaPontificia Universidad Católica de Chile8330024 SantiagoChile Sección de Gastroenterología Hospital del SalvadorEscuela de MedicinaUniversidad de Chile7500922 SantiagoChile Unidad de Gastroenterología Universidad del DesarrolloClínica Alemana7650568 SantiagoChile Unidad de Trasplante Hepático Hospital del SalvadorUnidad de GastroenterologíaClínica Las Lilas7510524 SantiagoChile Sección de Gastroenterología Departamento de MedicinaHospital Clínico Universidad de ChileChile8380456 SantiagoChile Sección de Gastroenterología Hospital Clínico Universidad de ChileEscuela de MedicinaUniversidad de Chile8380456 SantiagoChile Digestive Diseases Unit Clínica Re?aca2540364 Vi?a del MarChile Gastroenterology Department Clínica Las Condes6770128 SantiagoChile Centre for Medical Education Escuela de MedicinaPontificia Universidad Católica de Chile8330024 SantiagoChile

AIM: To build a consensus among Chilean specialists on the appropriate management of patients with nonalcoholic fatty liver disease (NAFLD) in clinical practice.

关键词： Nonalcoholic fatty liver disease Steatosis Consensus Evidence-based medicine Treatment

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Role of Thermal Stresses in Degradation of High Power Laser Diodes

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Transactions of Nanjing University of Aeronautics and Astronautics 2014年第2期31卷 186-190页

作者： juan Jimenez Julian Anaya jorge Souto GdS Optronlab Ed.i+dUniversidad de Valladolid

Catastrophic degradation of high power laser diodes is due to the generation of extended defects inside the active parts of the laser structure during the laser *** mechanism driving the degradation is strongly related to the existence of localized thermal stresses generated during the laser *** thermal stresses can overcome the yield strength of the materials forming the active part of the laser *** factors contribute to reduce the laser power threshold for *** them the thermal transport across the laser structure constitutes a critical issue for the reliability of the device.

关键词： high power laser diodes thermal stresses laser degradation extended defects

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Suspended sediment transport in the Magdalena River(Colombia,South America):Hydrologic regime,rating parameters and effective discharge variability

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International Journal of Sediment Research 2016年第1期31卷 25-35页

作者： Aldemar Higgins juan Camilo Restrepo juan Carlos Ortiz jorge Pierini Luis Otero (UNS-CIC-CCT)

The Magdalena River has the greatest length（1612 km）and drainage area（257400 km2）of any river system in Colombia,and its watershed occupies 24%of the Colombian *** river originates in the Andean Cordillera at an elevation of 3685 m and flows to its mouth in the Caribbean Sea（Bocas de Cenizas）.For this study,information on daily flow discharge（Q）,suspended sediment transport(Qsand mean suspended sediment concentration（Cs）from 1990-2010 for the Magdalena River,based on measurements at the Caiamar gauging station（the closest station to the mouth）,was provided by the Institute of Hydrology,Meteorology and Environmental Studies of Colombia（IDEAM in Spanish）.The mean annual suspended sediment load was 169±73×10～6tyr-1for the period from 1990-1999 and145±47×10～6 t yr1for the period from 2000-2010,amounting to a 14%reduction in the suspended sediment transport rate between the two *** sediment rating curve（Qs=aQb）was also evaluated for these two periods（1990-1999 and 2000-2010）.An analysis of the regression coefficients（a.b）for the two periods showed a decrease in b and an increase in a after 1999,which coincides with a decrease in suspended sediment *** change might be attributed to natural factors,including the accumulation of sediment in the Depresion Momposina and variation in hydro-climatological patterns in the Caribbean *** in effective transport were confirmed using three methods（Log-Normal and Normal distribution,and magnitude-frequency histogram）for the study period.

关键词： Suspended sediment transport Magdalena River Transport regime Effective discharge Sediment rating curve

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Mechanical and natural ventilation systems in a greenhouse designed using computational fluid dynamics

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International Journal of Agricultural and Biological Engineering 2014年第1期7卷 1-16页

作者： jorge Flores-Velazquez juan I.Montero Esteban J.Baeza juan C.Lopez Mexican Institute of Water Technology.Paseo Cuauhnáhuac 8532 Col.ProgresoC.P.62550JiutepecMor.Mexico Institut de Recerca i Tecnologia Agroalimentàries 08348Cabrils(Barcelona)Spain IFAPA Centro La Mojonera(Junta de Andalucía) Camino San Nicolás 104745 La MojoneraAlmeríaSpain Fundación Cajamar.Estación Experimental“Las Palmerillas”Autovía del Mediterráneo Km 416 704710El EjidoAlmeríaSpain

The aim of this study was to analyse air exchange and temperature distribution in a greenhouse with combined mechanical and natural ventilation and to design more efficient mechanical ventilation *** this purpose,a computational fluid dynamics(CFD)model of the greenhouse was *** configurations were considered:Configuration 1(mechanical ventilation and closed roof ventilators),Configurations 2 and 3(mechanical ventilation and roof ventilators open 30%and 100%,respectively).After validation,the CFD model was used to improve the design of the greenhouse mechanical ventilation system in each of the three configurations *** greenhouse lengths,28 m,50 m,75 m and 100 m,were used in the *** to fan ventilation only,roof ventilation improved the climate of fan-ventilated greenhouses in terms of the air exchange rate(22%)and climate uniformity because the internal air was mixed better than with mechanical ventilation *** the greenhouse length increased,more advantages were achieved with natural ventilation compared to mechanical *** most configurations,there was a strong linear correlation between temperature gradient and greenhouse *** greenhouse whose regression line had the steepest slope was the one with closed roof *** the fan capacity produced a general reduction in temperature,but the effect was less intense for the greenhouses with open roof *** to box inlet ventilators,an enlarged continuous inlet in the wall opposite the fans increased overall system performance because it eliminated backflow recirculation zones,which are prone to produce high temperatures.

关键词： greenhouse cooling fan ventilation roof ventilators combined ventilation

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TLR8： the forgotten relative revindicated

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Cellular & Molecular Immunology 2012年第6期9卷 434-438页

作者： jorge L Cervantes Bennett Weinerman Chaitali Basole juan C Salazar Department of Pediatrics Immunology University of Connecticut Health Center Farmington CT USA Division of Pediatric Infectious Diseases Connecticut Children's Medical Center Hartford USA Parmington CT 06030 USA

The endosomal Toll-like receptors （TLRs） TLR3, TLR7, TLR8 and TLR9 are important in sensing foreign nucleic acids encountered by phagocytes. Because TLR8 was initially thought to be non-functional in mice, less is known about TLR8 than the genetically and functionally related TLR7. Originally associated with the recognition of single-stranded RNA of viral origin, there is now evidence that human TLR8 is also able to sense bacterial RNA released within phagosomal vacuoles, inducing the production of both nuclear factor （NF）-κB-dependent cytokines and type I interferons （IFNs）, such as IFN-β. The functions of TLR8 extend beyond the recognition of foreign pathogens and include cross-talk with other endosomal TLRs, a process that may also have a role in the generation of autoimmunity.

关键词： human monocytes TLR8 type I interferon

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Color pref ere nee cool versus warm in nursing homes depends on the expected activity for interior spaces

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Frontiers of Architectural Research 2020年第4期9卷 739-750页

作者： Ana Torres juan Serra jorge Llopis Anna Delcampo Instituto de Restauracion Del Patrimonio Universitat Politecnica de ValenciaValencia 46022Spain

This study explores the color preferences of elderly residents of nursing homes based on the expected activities for different rooms,activity rooms,and bedrooms and compares the results with the arousal level induced by each *** experime nts were con ducted,one with elderly people living in nursing homes in the Valen cian Comm unity,and the other in a laboratory with virtual reality and physiological markers(i.e.,heart rate variability).I dlviduals assessed six colors in two groups of warm and *** demonstrate that preferences for warm and cool colors depend on the room *** the activity room,warm colors were preferred over the cool colors by both genders,fitting the higher arousal levels induced by warm versus cool *** the bedrooms,cool colors were preferred by both genders,fitting the lower arousal levels induced by cool colors in females and the other models that suggest a U-shaped relation between the arousal level and the visible spectra of ***,the color preferences for interior spaces in nursing homes depend on the room type and are related to the arousal level for the expected activity in them.

关键词： Color Elderly Preference Arousal Architecture

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Porphyrinic Acceptors forFullerene-Free MolecularPhotovoltaics

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CCS Chemistry 2024年第2期6卷 276-296页

作者： jorge Labella juan Laforga-Martin Tomás Torres Department of Organic Chemistry Universidad Aut´onoma de Madrid28049 Madrid Institute for Advanced Research in Chemical Sciences Universidad Aut´onoma de MadridMadrid IMDEA—Nanociencia 28049 Madrid

Over the past few years,the development of nonfullerene acceptors(NFAs)has become a prominent focus in both organic and perovskite solar cell(OSCs and PSCs,respectively)research *** this context,porphyrinoids,compounds structurally related to porphyrins,have emerged as promising solar cell *** contrast to the widely used fullerene acceptors,porphyrinoids exhibit strong,broad absorption properties across the UV–vis/NIR spectrum,which can be easily tuned through chemical ***,they can be prepared and derivatized using cost-effective and straightforward methodologies,allowing for convenient adjustments in thin-film morphology,processability,supramolecular organization,and energy ***,these compounds offer higher thermal and photochemical stability,resulting in longer device lifetimes compared to their fullerene-based *** this review,we outline the utilization of porphyrinoids as NFAs in OSCs and PSCs,discussing essential aspects such as design guidelines,molecular properties,and device *** goal is to inspire and further promote the development of n-type porphyrinoids,which have not yet fully unleashed their potential.

关键词： fullerene-free molecular photovoltaics nonfullerene acceptors porphyrinic acceptors n-type porphyrinoids organic and perovskite solar cells

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Evaluation of vaccine rollout strategies for emerging infectious diseases:A model-based approach including protection attitudes

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Infectious Disease Modelling 2023年第4期8卷 1032-1049页

作者： Mauricio Paton juan M.Acuna jorge Rodríguez Department of Chemical Engineering College of EngineeringKhalifa UniversitySAN Campus PO Box 127788Abu DhabiUnited Arab Emirates Department of Epidemiology and Public Health College of Medicine.Khalifa UniversityPO Box 127788Abu DhabiUnited Arab Emirates

Vaccine allocation strategies become crucial during vaccine shortages,especially in the face of potential outbreaks of new infectious diseases,as witnessed during the COVID-19 *** address this,a specialized compartmental model is created,which simulates an emerging infectious disease similar to *** model divides the population into different age groups and is used to compare various vaccine prioritisation approaches,aiming to minimize the total number of *** model is an improvement upon previous ones as it incorporates essential behavioural factors and is adapted to account for the protective effects of vaccination against both disease infection and *** takes into account human behaviors such as mask-wearing and social distancing by utilizing specific parameters related to self-protection,awareness levels,and the frequency of daily person-to-person interactions within each age ***,a novel method for dynamic vaccine prioritisation was introduced in this *** approach is model-independent and relies on the dynamic R *** is the first time such a method has been developed,offering a decision-making approach that is not tied to any specific *** innovation provides a flexible and adaptable strategy for determining vaccine priorities based on real-time data and the current state of the *** findings reveal crucial insights into vaccine allocation *** the daily rollout rates are fast(0.75%or higher)and children are eligible for vaccination,prioritising groups with high daily person-to-person interactions can lead to substantial reductions in total fatalities(up to approximately 40%lower).On the other hand,if rollout rates are slower and overall vaccination coverage is high,focusing on vaccinating elders emerges as the most effective strategy,resulting in up to approximately 10%fewer ***,the scenario changes significantly when children are not eligible for vaccination

关键词： behaviour slower utilizing

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