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Influence of wire spacing and plate spacing on electrostatic precipitation of nanoparticles: An approach involving electrostatic shielding and diffusion charging

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Particuology 2023年第9期80卷 127-139页

作者： felipe de Aquino Lima Vádila Giovana guerra Department of Chemical Engineering Federal University of São CarlosRodovia Washington LuísKm 235C.P.676CEP 13560-970São CarlosSPBrazil

Electrostatic precipitation is a process widely used as gas cleaning device,to removal particles from gas ***,in a conventional and well-sized precipitator,the collection efficiency decreases for ultrafine particles,making it difficult to employ this equipment for controlling nanoparticle *** paper investigates the influence of plate spacing(4 and 6.5 cm)and wire spacing(4,6,and 12 cm)on the electric current and nanoparticle collection efficiency,considering the effect of diffusion charging and electrostatic *** laboratory-scale dry wire-plate electrostatic precipitators with different plate spacings were tested for the collection of nanoparticles(6.15–241.4 nm)at three air velocities(1.9,2.9,and 3.9 cm/s).The results demonstrated the effectiveness of the equipment in removing nanoparticles(99.9%)under the highest electric *** values of the wire spacing led to increases in the current and the collection *** was associated with reduced electrostatic shielding,which is more evident in smaller ducts with a higher density of field *** is expected that the findings should improve knowledge on electrostatic precipitation of nanoparticles,enabling optimization of collection efficiency by considering the effects of geometric parameters.

关键词： Electrostatic precipitation Nanoparticles Collection efficiency Plate spacing Wire spacing

Excitotoxicity-induced endocytosis as a potential target for stroke neuroprotection

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Neural Regeneration Research 2021年第2期16卷 300-301页

作者： Margarita Díaz-guerra Instituto de Investigaciones Biomédicas“Alberto Sols” Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid(CSIC-UAM)MadridSpain

Decreased neuronal survival-signaling and brain damage:Stroke is a leading cause of death worldwide,the major cause of adult disability and second of *** spite of the social and economic importance of this disorder,an... 详细信息

关键词： drugs death damage

Using GEDI lidar data and airborne laser scanning to assess height growth dynamics in fast-growing species:a showcase in Spain

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forest Ecosystems 2021年第1期8卷 182-198页

作者： Juan guerra-Hernández Adrián Pascual 3edata Centro de iniciativas empresariaisFundación CEL.O Palomar s/n27004 LugoSpain forest Research Centre School of AgricultureUniversity of LisbonTapada da Ajuda1349-017 LisbonPortugal Center for Global Discovery and Conservation Science Arizona State UniversityHiloHA 96720USA

Background:The NASA’s Global Ecosystem Dynamics Investigation(GEDI)satellite mission aims at scanning forest ecosystems on a multi-temporal short-rotation *** GEDI data can validate and update statistics from nationwide airborne laser scanning(ALS).We present a case in the Northwest of Spain using GEDI statistics and nationwide ALS surveys to estimate forest dynamics in three fast-growing forest ecosystems comprising 211,346 *** objectives were:i)to analyze the potential of GEDI to detect disturbances,ii)to investigate uncertainty source regarding non-positive height increments from the 2015–2017 ALS data to the 2019 GEDI laser shots and iii)to estimate height growth using polygons from the forest Map of Spain(fMS).A set of 258 National forest Inventory plots were used to validate the observed height ***:The spatio-temporal assessment from ALS surveying to GEDI scanning allowed the large-scale detection of *** mean annual height growths were 0.79(SD=0.63),0.60(SD=0.42)and 0.94(SD=0.75)m for Pinus pinaster,Pinus radiata and Eucalyptus spp.,*** median annual values from the ALS-GEDI positive increments were close to NfI-based growth values computed for Pinus pinaster and Pinus radiata,*** effect of edge border,spatial co-registration of GEDI shots and the influence of forest cover in the observed dynamics were important factors to considering when processing ALS data and GEDI ***:The use of GEDI laser data provides valuable insights for forest industry operations especially when accounting for fast ***,errors derived from positioning,ground finder and canopy structure can introduce uncertainty to understand the detected growth patterns as documented in this *** analysis of forest growth using ALS and GEDI would benefit from the generalization of common rules and data processing schemes as the GEDI mission is increasingly being utilized in the forest remote sensing community.

关键词： forest inventory Productivity Multi-temporal LiDAR full-waveform(fW) Satellite mapping

Robotic choledochoduodenostomy for complicated common bile duct stones-a video vignette

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Hepatobiliary & Pancreatic Diseases International 2021年第3期20卷 296-297页

作者： francesco guerra filippo Petrelli Alberto Patriti Division of Surgery-Ospedali Riuniti Marche Nord Piazzale Cinelli 361121 PesaroItaly

Despite that endoscopic retrograde cholangiopancreatography(ERCP) has become the gold standard in the treatment of benign biliary obstruction, bilioenteric anastomosis still represents a valid option to treat the increasing number of patients with recalcitrant obstruction, and/or altered anatomy after digestive surgery [1,2]. Minimally invasive techniques have become the standard of care for the surgery of the biliary tract in specialized centers [2,3].

关键词： anatomy obstruction surgery

Causes and treatment of idiopathic benign paroxysmal positional vertigo based on endocrinological and other metabolic factors

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Journal of Otology 2020年第4期15卷 155-160页

作者： Joaquín guerra Jesús Devesa Otolaryngology Medical Center FoltraTravesía de Montouto 2415886TeoSpain Scientific Direction Medical Center FoltraTravesía de Montouto 2415886TeoSpain

The genesis of the Benign Paroxysmal Positional Vertigo(BPPV)seems to be related to some metabolic *** factors,such as vitamin D,glucocorticoids,and even thyroid and growth hormones,can affect bone metabolism and the mineralization of *** also seems to link to factors related to aging or nutritional ***,since the incidence of BPPV is quantitatively higher in women than in men,female sex steroids could be associated with this *** could be useful to understand how these factors act in otoconial mineralization if we want to develop treatments aimed at preventing or delaying BPPV *** this review,we will analyze the role of these metabolic and hormonal factors in otoconial mineralization and in the treatment of BPPV.

关键词： Benign paroxysmal positional vertigo Otoconia Bone metabolism Vitamin D Estrogens GH

Optimal guaranteed cost control for an uncertain discrete T-S fuzzy system with time-delay

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控制理论与应用（英文版） 2009年第2期7卷 144-150页

作者： Renming WANG Thierry Marie guerra Juntao PAN College of Electrical Engineering and Information Technology Three Gorges University Yichang Hubei 443002 China LAMIH UMR CNRS Universite de Valenciennes et du Hainaut-Canbresis Le Mont Houy Valenciennes Cedex France Key Laboratory of Measurement and Control of CSE of Ministry of Education Southeast University Nanjing Jiangsu 210096 China

This paper considers the guaranteed cost control problem for a class of uncertain discrete T-S fuzzy systems with time delay and a given quadratic cost function. Sufficient conditions for the existence of such controllers are derived based on the linear matrix inequalities （LMI） approach by constructing a specific nonquadratic Lyapunov-Krasovskii functional and a nonlinear PDC-like control law. A convex optimization problem is also formulated to select the optimal guaranteed cost controller that minimizes the upper bound of the closed-loop cost function. finally, numerical examples are presented to demonstrate the effectiveness of the proposed approaches.

关键词： fuzzy system Time delay Linear matrix inequalities (LMI) Guaranteed cost control

Large deformations in deep tunnels excavated in weak rocks:Study on Y-Basque high-speed railway tunnels in northern Spain

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Underground Space 2021年第6期6卷 636-649页

作者： Cosimo Iasiello Juan Carlos guerra Torralbo Cesar Torrero fernandez IRP biuro projektow sp.z.o.o. al.Jana Pawla Ⅱ 1100-828 WarszawaPoland European University of Madrid Calle Tajos/n 28670 Villaviciosa de OdonMadridSpain Ayesa Ingenierıa S.A. Paseo Castellana 9128046 MadridSpain

Designing the support system for a deep tunnel in weak rock is always challenging,because a misjudgment of real rock behavior can lead to *** the construction of the Legutiano tunnel,which belongs to the high-speed railway network named Y-Basque in Spain,the measured convergences exhibited large deformations,which were significantly higher than those in the detailed *** first glance,these deformations were associated with squeezing,as the tunnel was excavated in flysch-shales and limonite with a maximum cover of approximately 360 *** aim of this study is to perform a retrofit analysis to compare the most popular empirical and analytical approaches for evaluating the squeezing effect,using geotechnical data pertaining to other tunnels excavated in the same area and in the same geological ***,a non-linear finite element analysis,focusing on time-dependent rock behavior,is conducted to reproduce the convergences measured.

关键词： Shales Limonite Squeezing Plaxis Tunnel monitoring

A case-based approach to integrative medicine for cardiovascular disease prevention

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Journal of Integrative Medicine 2020年第2期18卷 159-162页

作者： Brody Slostad Tejinder Khalsa Kathleen Young Hildalicia guerra Anjali Bhagra Department of Internal Medicine Mayo ClinicRochesterMinnesota 55904USA Department of Cardiovascular Medicine Mayo ClinicRochesterMinnesota 55904USA Department of Neurology Mayo ClinicRochesterMinnesota 55904USA

Cardiovascular disease is commonly encountered in the adult population and has large impacts on morbidity and mortality. The ever-expanding evidence base for the use of integrative medicine in cardiology necessitates providers caring for patients with cardiovascular disease to be familiar with these ***, providers may find it difficult to adequately discuss these therapies in an average office *** a case-based, question-and-answer approach, the authors review some clinically relevant and helpful research that addresses the incorporation of integrative medicine in cardiovascular disease prevention.

关键词： Integrative medicine Coronary artery disease Atrial fibrillation Preventive medicine Cerebrovascular disease

Analysis of Culture of Innovation in Project Management of Costa Rican Solar Energy Companies

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Analysis of Culture of Innovation in Project Management of C...

作者： Daniel Rueda guerra 山东大学

学位级别：硕士

Even though in Costa Rica the solar energy industry is incipient,over the years the number of micros,small and medium-sized companies（MSMEs）,grouped in the Costa Rican Solar Energy Association（Acesolar）,has been *** the import of photovoltaic systems to offer services through consulting projects,marketing,and installation of solar panels so organizations and families can take advantage of solar energy as an alternative source to replace conventional electric *** because of the characteristics of solar energy and the technologies involved,MSMEs are obliged to innovate permanently and,for this reason,they need to promote a culture of innovation that involves technical,managerial and corporate *** companies have managed to maintain their competitiveness,it is unknown what are the factors of the culture of innovation that have allowed these companies to remain in the market and manage consulting,marketing and panel installation *** this purpose,in this thesis the objective is addressed:Analyze the construction of innovation culture in the project management of Costa Rican solar energy *** on the perceptions that the managers of MSMEs have,it was determined that innovation is present in the daily activities of the companies in the *** this sense,the culture of innovation that they have been introducing allows companies to manage the consulting,marketing and installation projects of solar panel systems and the generation of ideas to incubate innovative concepts in the formulation and execution of the same *** part of the factors of the culture of innovation that were identified in this study,it can be said that companies have participative management styles that promote the incorporation of innovative ideas in *** diversity of thoughts in the construction of new ideas is stimulated,and the positive contributions in the management of the projects are communicated *** is allowed if

关键词： Solar energy companies Project managemen Culture Costa Rican