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A Simulation of Market-based Non-frequency Ancillary Service Procurement Based on Demand Flexibility

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Journal of Modern Power Systems and Clean Energy 2023年第3期11卷 781-792页

作者： ricardo Faia Fernando Lezama Tiago Pinto Pedro Faria Zita Vale josé Manuel Terras Susete Albuquerque Research Group on Intelligent Engineering and Computing for Advanced Innovation and Development(GECAD) R.Dr.António Bernardino de Almeida4314249-015PortoPortugal E-REDES Distribuição de Eletricidade S.A.R.Camilo Castelo Branco43LisboaPortugal

This paper proposes a novel approach for the provision of non-frequency ancillary service(AS)by consumers connected to low-voltage distribution *** proposed approach considers an asymmetric pool-based local market for AS negotiation,allowing consumers to set a flexibility quantity and desired price to trade.A case study with 98 consumers illustrates the proposed market-based non-frequency AS provision ***,three different strategies of consumers’participation are implemented and tested in a real low-voltage distribution network with radial *** is shown that consumers can make a profit from the sale of their flexibility while contributing to keeping the network power losses,voltage,and current within pre-defined ***,the results demonstrate the value of AS coming directly from end-users.

关键词： Demand flexibility local electricity market ancillary service low-volatge distribution network

Integral Representation Formulas Related to the Lamé–Navier System

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Acta Mathematica Sinica,English Series 2020年第12期36卷 1341-1356页

作者： ricardo ABREU-BLAYA Juan BORY-REYES Marcos Antonio-HERRERA-PELáEZ josé María SIGARRETA-ALMIRA Facultad de Matemáticas Universidad Autónoma de GuerreroGuerreroMéxico Instituto Politécnico Nacional SEPI-ESIME-ZAC CD-MXMéxico

The paper provides integral representations for solutions to a certain first order partial differential equation natural arising in the factorization of the Lamé–Navier system with the help of Clifford analysis *** representations look like in spirit to the Borel–Pompeiu and Cauchy integral formulas both in three and higher dimensional setting.

关键词： Lamésystem Clifford analysis Dirac operator

Liver disease and erythropoietic protoporphyria:A concise review

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World Journal of Gastroenterology 2010年第36期16卷 4526-4531页

作者： María josé Casanova-González María Trapero-Marugán E Anthony Jones ricardo Moreno-Otero Department of the Gastroenterology and Hepatology Hospital Universitario de la Princesa and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas(CIBEREHD)Madrid 28006Spain

The porphyries are a group of metabolic disorders characterized by deficiencies in the activity of enzymes involved in the biosynthesis of *** erythropoietic protoporphyria(EPP),in the majority of cases an autosomal dominant disease,there is a mutation of the gene that encodes ferrochelatase(FECH).FECH deficiency is associated with increased concentrations of protoporphyrin in erythrocytes,plasma,skin and *** prevalence of this inherited disorder oscillates between 1:75 000 and 1:200 *** manifestations of EPP appear in early infancy upon first exposure to the ***,approximately 5%-20% of patients with EPP develop liver *** of protoporphyrin in the liver is associated with cholestatic phenomena and oxidative stress that predisposes to hepatobiliary disease of varying degrees of severity,such as cholelithiasis,mild parenchymal liver disease,progressive hepatocellular disease with end-stage liver disease and acute liver *** damage is the major risk in EPP patients,so surveillance and frequent clinical and biochemical liver follow-up is *** diagnostic approach consists in detecting increased levels of protoporphyrin,decreased activity of FECH and genetic analysis of the FECH gene.A variety of nonsurgical therapeutic approaches have been adopted for the management of EPP associated with liver disease,but none of these has been shown to be unequivocally ***,some may have a place in preparing patients for liver *** transplantation does not correct the constitutional deficiency of ***,there is a risk of recurrence of liver disease after liver transplantation as a result of continuing overproduction of *** authors recommend that bone marrow transplantation should be considered in liver allograft recipients to prevent recurrence of hepatic disease.

关键词： Erythropoietic protoporphyria Protoporphyrin Liver Ferrochelatase

Fractional Square Functions and Potential Spaces, Ⅱ

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Acta Mathematica Sinica,English Series 2015年第11期31卷 1759-1774页

作者： Jorge J.BETANCOR Juan C.FARIA Lourdes RODRIGUEZ-MESA ricardo TESTONI jos L.TORREA Departamento de Anlisis Matemtico Universidad de La Laguna Campus de Anchieta Avda.Astrofísico Francisco Snchez 38271 La Laguna (Sta.Cruz de Tenerife) Spain Departamento de Matemtica Universidad Nacional del Sur Avda. Alem 1253 8000 Bahía BlancaBuenos Aires Argentina Departamento de Matem'aticas Universidad Autónoma de Madrid ICMAT-CSIC-UAM-UCM-UC3MCiudad Universitaria de Canto Blanco 28049 Madrid Spain

In this paper, we study fractional square functions associated with the Poisson semigroup for SchrSdinger operators. We characterize the potential spaces in the SchrSdinger setting by using vertical, area and gλ, fra... 详细信息

关键词： g-function Schrodinger operator potential space

Clinical assessment and management of liver fibrosis in nonalcoholic fatty liver disease

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World Journal of Gastroenterology 2020年第39期26卷 5919-5943页

作者： Alejandro Campos-Murguía Astrid Ruiz-Margáin joséA González-Regueiro ricardo U Macías-Rodríguez Department of Gastroenterology Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico City 14080Mexico

Non-alcoholic fatty liver disease(NAFLD)is among the most frequent etiologies of cirrhosis worldwide,and it is associated with features of metabolic syndrome;the key factor influencing its prognosis is the progression of liver *** review aimed to propose a practical and stepwise approach to the evaluation and management of liver fibrosis in patients with NAFLD,analyzing the currently available *** the assessment of NAFLD patients,it is important to identify clinical,genetic,and environmental determinants of fibrosis development and its *** properly detect fibrosis,it is important to take into account the available methods and their supporting scientific evidence to guide the approach and the sequential selection of the best available biochemical scores,followed by a complementary imaging study(transient elastography,magnetic resonance elastography or acoustic radiation force impulse)and finally a liver biopsy,when *** help with the selection of the most appropriate method a Fagan′s nomogram analysis is provided in this review,describing the diagnostic yield of each method and their post-test probability of detecting liver ***,treatment should always include diet and exercise,as well as controlling the components of the metabolic syndrome,+/-vitamin E,considering the presence of sleep apnea,and when available,allocate those patients with advanced fibrosis or high risk of progression into clinical *** final end of this approach should be to establish an opportune diagnosis and treatment of liver fibrosis in patients with NAFLD,aiming to decrease/stop its progression and improve their prognosis.

关键词： Non-alcoholic fatty liver disease Liver fibrosis Clinical assessment Diagnosis Treatment Test accuracy

Current role and future perspectives of cardiac rehabilitation in coronary heart disease

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World Journal of Cardiology 2021年第12期13卷 695-709页

作者： Eduardo M Vilela ricardo Ladeiras-Lopes Ana Joao Joana Braga Susana Torres Sofia Viamonte josé Ribeiro Madalena Teixeira josé P Nunes ricardo Fontes-Carvalho Department of Cardiology Centro Hospitalar de Vila Nova de Gaia/EspinhoVila Nova de Gaia 4434-502Portugal Department of Surgery and Physiology Cardiovascular Research Unit(UnIC)Faculty of MedicineUniversity of PortoPorto 4200-319Portugal Centro de Reabilitação do Norte Centro Hospitalar de Vila Nova de Gaia/EspinhoVila Nova de Gaia 4405-565Portugal Faculty of Medicine University of PortoPorto 4200-319Portugal

Ischaemic heart disease(IHD)is a major cause of morbidity and mortality *** there have been major advances in this field,these patients are still a higher risk *** such,strategies to mitigate risk and tailor secondary prevention measures are of the utmost *** rehabilitation(CR),encompassing several domains including exercise training,cardiovascular risk factor optimization,nutritional and psychological assessments,as well as other ancillary interventions has shown to be one of the pillars in the contemporary management of patients with ***,CR is associated with several benefits in this population,ranging from functional capacity to improvements in *** this,there are still several issues concerning the optimal application of CR which are still not fully ascertained,such as lack of referral and completion,as well as questions related to programme design(particularly among patients with multiple comorbidities).In this review,we aim at presenting a pragmatic overview on the current role of CR in the management of individuals with IHD,while also discussing some of the caveats in the current data,as well as future concepts which could help improve the uptake and personalization of this pivotal time-tested intervention.

关键词： Cardiac rehabilitation Secondary prevention Myocardial infarction Ischaemic heart disease Cardiovascular diseases

Is interferon-beta an alternative treatment for chronic hepatitis C?

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World Journal of Gastroenterology 2006年第17期12卷 2730-2736页

作者： ricardo Moreno-Otero María Trapero-Marugán Elena Gómez-Domínguez Luisa García-Buey joséA Moreno-Monteagudo Unit of Hepatology Hospital Universitario de La Princesa Universidad Autónoma de MadridSpain

The treatment of chronic hepatitis C （CHC） is still far from optimal, particularly for those subpopulations that do not respond to the standard combination therapy with Interferon-α （IFNα） plus ribavirin. Although in some cases the use of higher doses or longer treatment periods may be effective, these approaches are generally associated with a higher incidence of adverse events, which may either lead to a reduction in patient compliance or require drug withdrawal. IFNβ could represent an interesting alternative for treating CHC patients. Controversial data about IFNβ efficacy in CHC exist, the main reason being that many results stem from pilot studies with small cohorts of patients. However, promising results have been obtained in some subgroups of patients that fail to respond to IFNα. Additionally, the good tolerability of IFNβ represents an important advantage of the drug. The rates of dropouts in controlled clinical trials, as well as the need for dose reductions or treatment discontinuation are very low. It might be worth assessing the value of IFNβ plus ribavirin in randomized studies with a larger cohort of patients, not eligible or not tolerating standard therapy, and for non-responders.

关键词： Hepatitis C Hepatitis C virus Interferon beta Ribavirin

Energy Conversion Factor for Gasoline Engines in Real-World Driving Emission Cycle

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Automotive Innovation 2020年第2期3卷 169-180页

作者： Toshizaemom Noce Sérgio de Morais Hanriot Luis Carlos Monteiro Sales joséricardo Sodré Matheus Bitarães de Novaes Department of Mechanical Engineering Pontifical University of Minas GeraisAv.Dom JoséGaspar 500Belo HorizonteMG 30535-901Brazil School of Engineering&Applied Science Aston UniversityAston TriangleBirmingham B47ETUK Department of Electrical Engineering Federal University of Minas GeraisAv.Pres.Antônio Carlos6627Belo HorizonteMG 31270-901Brazil

A precise energy conversion factor is required to define the impact of greenhouse gas emissions by gasoline-powered vehi-cles and policies that will guide the application of future *** current energy conversion factor adopted by many countries is based on the Willans line approach,initially proposed in 1888 for steam engines,later adapted for internal combustion *** actual energy conversion factor,which defines the energy conversion for drivers in real traffic,is *** this article,eight world-class engines are tested in an engine bench for the acquisition of specific fuel consumption 3D ***,their energy conversion factors,calculated by dividing the energy output by the energy input,are simulated in real and urban traffic,acquired according to the real driving emissions(RDE)*** addition,a reference vehicle is instrumented to measure the energy input(fuel flow)and the energy output(mechanical energy in the half axles)under the same RDE cycle *** results of both procedures are very similar,respectively,0.405±0.04 L/kWh for the simulation based on eight benchmark engines,and 0.392±0.04 L/kWh for the reference vehicle driven in RDE traffic conditions,with a 95%confidence *** turbocharged engines,the factor attained by the simulation is 0.395±0.04 L/*** values of the energy conversion factor for gasoline engines got in this research are higher than those obtained through the Willans line approach,suggesting a new standard value of 0.405 L/kWh,replacing the current 0.264 L/*** could substantially change the greenhouse gas emissions in a tank-to-wheel approach for the entire vehicle and add-on eco-innovations.

关键词： Energy conversion factor Willans line EC443 Eco-innovation CO_(2)emission

Does an association exist between chronic pancreatitis and liver cirrhosis in alcoholic subjects?

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World Journal of Gastroenterology 2008年第40期14卷 6171-6179页

作者： Luis Aparisi Luis Sabater Juan Del-Olmo Juan Sastre Miguel-Angel Serra ricardo Campello Daniel Bautista Abdalla Wassel josé-Manuel Rodrigo Liver Unit Universitary Clinic Hospital Department of Surgery Universitary Clinic Hospital Department of Physiology University of Valencia Unit of Psiquiatry Servicio Valenciano de SaludValencia 46010Spain Department of Preventive Medicine Hospital Dr.Peset

AIM: To study the possible association between chronic pancreatitis (CP) and liver cirrhosis (LC) of alcoholic etiology,after excluding any other ***: One hundred and forty consecutive alcoholic patients were subdivided into three groups: CP (n = 53),LC (n = 57),and asymptomatic alcoholic (n = 30).Clinical,biochemical and morphological characteristics,Child-Pugh index,indocyanine green test,and fecal pancreatic elastase-1 test were ***: In patients with cirrhosis,major clinical manifestations of CP such as pancreatic pain and steatorrhea,as well as imaging alterations of CP such as calcifications,duct dilation and pseudocysts were absent; insulin-dependent diabetes was present in 5.3% of cases,and elastase-1 test was altered in only 7%,and severely altered in *** patients with CP,clinical characteristics of cirrhosis such as ascites,encephalopathy and gastrointestinal hemorrhage were present in one case,Child-Pugh grade > A in 5.7%,and altered indocyanine green test in 1.9% *** asymptomatic alcoholism,there was only a non-coincident alteration of elastase-1 test and indocyanine test in 14.8% and 10%,respectively,but other characteristics of cirrhosis or CP were *** inverse correlation (r = -0.746) between elastase-1 test and indocyanine test was found in alcoholic ***: There is a scarce coincidence in clinical and morphological alterations among patients with CP or LC of alcoholic etiology,but an inverse correlation between pancreatic and liver function *** findings support that these alcoholic diseases evolve in a different manner and have different etiopathogenesis.

关键词： Alcoholic chronic pancreatitis Alcoholicliver cirrhosis Alcoholism Pancreatic function Hepaticfunction