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Nodal user’s demand response based on incentive based programs

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Journal of Modern Power Systems and Clean Energy 2017年第1期5卷 79-90页

作者： Nestor GONZáLEZ-CABRERA guillermo GUTIéRREZ-ALCARAZ Instituto Tecnolo´gico Superior de Irapuato Irapuato 36620Mexico Instituto Tecnolo´gico de Morelia Morelia 58120Me´xico

This paper describes a practical approach to identify nodal price compensation payment for nodal consumers willing to reduce their energy consumption(consumers’ demand response). The implementation of a nodal reliability service pricing is based on contingency assessment of N-2 order for transmission lines. A representative annualized demand curve is used to reflect the system’s operation condition by seasons. Such curve is used to access the nodal reliability impact trough a whole year in order to determine back-payments(incentive payment) to users for service interruption. The IEEE_RTS 24 nodes system is used to implement the proposed approach.

关键词： Nodal demand response Demand side management Reliability assessment Incentive based programs(IBP)

Isolation and Characterization of Nanocellulose Obtained from Industrial Crop Waste Resources by Using Mild Acid Hydrolysis

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Journal of Renewable Materials 2018年第4期6卷 362-369页

作者： Galia Moreno Karla Ramirez Marianelly Esquivel guillermo Jimenez Laboratory of Polymers(POLIUNA) School of ChemistryNational UniversityHerediaCosta Rica

Cellulose,microcrystalline cellulose and nanocellulose were prepared from three agricultural waste resources:pineapple leaf(PALF),banana rachis(BR),and sugarcane bagasse(SCB).Each waste resource was first converted into microcrystalline cellulose which was subsequently converted into cellulose nanoparticles by using mild(30%w/v)and strong(60%w/v)sulfuric acid concentrations for *** transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),and thermogravimetric analysis(TGA)were used to characterize each waste resource and extracted cellulosic ***,nanocelluloses were studied by zeta potential,size analysis,and transmission electron microscopy(TEM).Cellulose nanowhiskers were successfully obtained and isolated with a 33%average yield by applying a mild acid *** BR and SCB proved to be more promising agricultural waste resources in terms of their crystalline cellulosic content and properties.

关键词： Cellulose pineapple leaf sugarcane bagasse banana rachis whiskers

Alcohol consumption leads to loss of healthy life,but the ADH1B*2 allele may still protect from NASH

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Hepatobiliary Surgery and Nutrition 2021年第3期10卷 391-393页

作者： guillermo Mazzolini Ali Canbay Gene Therapy Laboratory Instituto de Investigaciones en Medicina Traslacional(IIMT)Universidad Austral-CONICETBuenos AiresArgentina Liver Unit Hospital Universitario AustralUniversidad AustralBuenos AiresArgentina Department of Internal Medicine University Hospital Knappschaftskrankenhaus BochumRuhr University BochumBochumGermany

Nonalcoholic fatty liver disease(NAFLD)is now the most common cause of chronic liver disease worldwide,affecting almost a quarter of the world population(1,2),and is a main cause of severe hepatic complications such as cirrhosis and liver *** histological assessment NAFLD and alcoholic liver disease(ALD)are difficult to distinguish;NAFLD diagnosis thus requires a limit of alcohol ***,NAFLD and ALD very frequently coexist in the same patient.

关键词： diagnosis intake Alcohol

Memory for location and visual cues in white-eared hummingbirds Hylocharis leucotis

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Current Zoology 2011年第4期57卷 468-476页

作者： guillermo PEREZ Carlos LARA Jose VICCON-PALE Martha SIGNORET-POILLON Doctorado en Ciencias Biologicas Universidad Autonoma Metropolitana. Unidad Xochimilco. Calzada del Hueso 1100 Col. Villa Quietud 04960 Moxico D.F. Moxico Laboratorio de Ecologfa de la Conducta Centro Tlaxcala de Biologfa de la Conducta UAT-UNAM Km 1.5 carretera Tlaxcala- Puebla s/n Colonia Xicohtoncatl Apdo. Postal 262 Tlaxcala Tlaxcala 90070 Moxico. Departamento el Hombre y su Ambiente. Universidad Autdnoma Metropolitana. Unidad Xochimilco. Calzada del Hueso 1100 Col. Villa Quietud 04960 MExico D.F. Mexico

In nature hummingbirds face floral resources whose availability, quality and quantity can vary spatially and temporally. Thus, they must constantly make foraging decisions about which patches, plants and flowers to visit, partly as a function of the nectar reward. The uncertainty of these decisions would possibly be reduced if an individual could remember locations or use visual cues to avoid revisiting recently depleted flowers. In the present study, we carried out field experiments with white-eared hummingbirds Hylocharis leucotis, to evaluate their use of locations or visual cues when foraging on natural flowers Penstemon roseus. We evaluated the use of spatial memory by observing birds while they were foraging between two plants and within a single plant. Our results showed that hummingbirds prefer to use location when foraging in two plants, but they also use visual cues to efficiently locate unvisited rewarded flowers when they feed on a single plant. However, in absence of visual cues, in both experiments birds mainly used the location of previously visited flowers to make subsequent visits. Our data suggest that hummingbirds are capable of learning and employing this flexibility depending on the faced environmental conditions and the information acquired in previous visits [Current Zoology 57 （4）： 468-476, 2011].

关键词： Visual cues Location White-eared hummingbird Foraging

The effect of rippling on the mechanical properties of graphene

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Nano Materials Science 2022年第1期4卷 18-26页

作者： guillermo Lopez-Polin Cristina Gomez-Navarro Julio Gomez-Herrero Instituto de Ciencia de Materiales de Madrid CSICMadrid E 28049Spain Departamento de Física de La Materia Condensada Universidad Autónoma de MadridMadridE-28049Spain IFIMAC Condensed Matter Physics Center(IFIMAC).Universidad Autónoma de Madrid MadridE-28049Spain

Graphene is the stiffest material known so far but, due to its one-atom thickness, it is also very ***, free-standing graphene exhibit ripples that has major effects on its elastic properties. Here we will summarize three experiments where the influence of rippling is essential to address the results. Firstly, we observed that atomic vacancies lessen the negative thermal expansion coefficient(TEC) of free-standing *** also observed an increase of the Young's modulus with global applied strain and with the introduction of small density defects that we attributed to the decrease of rippling. Here, we will focus on a surprising feature observed in the data: the experiments consistently indicate that only the rippling with wavelengths between 5 and 10 nm influences the mechanics of graphene. The rippling responsible of the negative TEC and anomalous elasticity is thought to be dynamic, i.e. flexural phonons. However, flexural phonons with these wavelengths should have minor effects on the mechanics of graphene, therefore other mechanisms must be considered to address our observations. We propose static ripples as one of the key elements to correctly understand the thermomechanics of graphene and suggest that rippling arises naturally due to a competition of symmetry breaking and anharmonic fluctuations.

关键词： Graphene Mechanical properties Atomic force microscopy Defects Ripples Stmain

Properties of nuclear pastas

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Frontiers of physics 2021年第2期16卷 119-173页

作者： Jorge A.Lopez Claudio O.Dorso guillermo Frank Department of Physics University of Texax at El PasoEl PasoTexas 79968USA Departamento de Fisica FCENUniversidad de Buenos AiresNunezArgentina Unidad de Investigacion y Desarrollo de las Ingenierias Universidad Tecnologica NacionalFacultad Regional Buenos AiresBuenos AiresArentina

In this review we study the nuclear pastas as they are expected to be formed in neutron star *** start with a study of the pastas formed in nuclear matter(composed of protons and neutrons),we follow with the role of the electron gas on the formation of pastas,and we then investigate the pastas in neutron star matter(nuclear matter embedded in an electron gas).Nuclear matter(NM)at intermediate temperatures(1 MeV≤T≤***),at saturation and and sub-saturation densities,and with proton content ranging from 30%to 50%was found to have liquid,gaseous and liquid-gas mixed *** isospin-dependent phase diagram was obtained along with the critical points,and the symmetry energy was calculated and compared to experimental data and other *** low temperatures(T≤1 MeV)NM produces crystal-like structures around satura-tion densities,and pasta-like structures at sub-saturation *** of the pasta structures were studied with cluster-recognition algorithms,caloric curve,the radial distribution function,the Lindemann coefficient,Kolmogorov statistics,Minkowski functionals;the symmetry energy of the pasta showed a connection with its *** star matter(NSM)is nuclear matter embedded in an electron *** electron gas is included in the calculation by the inclusion of an screened Coulomb *** connect the NM pastas with those in neutron star matter(NSM),the role the strength and screening length of the Coulomb interaction have on the formation of the pastas in NM was *** was found to exist even without the presence of the electron gas,but the effect of the Coulomb interaction is to form more defined pasta structures,among other ***,it was determined that there is a minimal screening length for the developed structures to be independent of the cell *** star matter was found to have similar phases as NM,phase transitions,symmetry energy,structure function and thermal *** in NM,pasta f

关键词： nuclear pasta neutron star matter nuclear symmetry energy molecular dynamics nuclear phase transitions

Role of dup A in virulence of Helicobacter pylori

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World Journal of Gastroenterology 2016年第46期22卷 10118-10123页

作者： Amin Talebi Bezmin Abadi guillermo Perez-Perez Department of Bacteriology Faculty of Medical Sciences Tarbiat Modares University Departments of Medicine and Microbiology New York University School of Medicine and VA Medical Center

Helicobacter pylori(H. pylori) is a gastric human pathogen associated with acute and chronic gastritis, 70% of all gastric ulcers, 85% of all duodenal ulcers, and both forms of stomach cancer, mucosal-associated lymphoid tissue(MALT) lymphoma and adenocarcinoma. Recently, attention has focused on possible relationship between presence of certain virulence factor and H. pylori-associated diseases. Some contradictory data between this bacterium and related disorders has been observed since not all the colonized individuals develop to severe disease. The reported diseases plausibility related to H. pylori specific virulence factors became an interesting story about this organism. Although a number of putative virulence factors have been identified including cytotoxin-associated gene a(cag A) and vac A, there are conflicting data about their actual participation as specific risk factor for H. pylori-related diseases. Duodenal ulcer promoting gene a(dup A) is a virulence factor of H. pylori that is highly associated with duodenal ulcer development and reduced risk of gastric cancer. The prevalence of dup A in H. pylori strains isolated from western countries is relatively higher than in H. pylori strains from Asian countries. Current confusing epidemiological reports will continue unless future sophisticated and molecular studies provide data on functional and complete dup A cluster in H. pylori infected individuals. This paper elucidates available knowledge concerning role of dup A in virulence of H. pylori after a decade of its discovery.

关键词： Helicobacter pylori dup A Bacterial virulence infection Clinical outcome

Maize defense against insect herbivory:A novel role for 9-LOX-derived oxylipins

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Molecular Plant 2023年第10期16卷 1484-1486页

作者： guillermo H.Jimenez-Aleman Georg Jander Boyce Thompson Institute 533 Tower RoadIthacaNY 14853USA

Up to 40%of global crops are destroyed by arthropod pests,either prior to harvest or durin. storage(Gullino et al.,2021).This problem is exacerbated by current and anticipated climatechanges that will allow the long-term survival of pest populationsin new habitats,as well as by the introduction of new pest speciesinto areas where they were not previously *** instance,the recent introduction of Spodoptera frugiperda(fall armyworm),which previously was a major pest of Zea mays(maize)only in theAmericas,led to the expansion of this species throughout themaize-growing regions of Africa and Asia in less than 5 years(Tay et al.,2022).

关键词： crops destroyed instance

Phenotypic ASCOD characterisations of ischaemic stroke in the young at an urban tertiary care centre

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Stroke & Vascular Neurology 2018年第4期3卷 209-214页

作者： Angela Liu Mohsen Pirastehfar Daohai Yu guillermo Linares Department of Neurology Washington University in St LouisSaint LouisMissouriUSA Department of Vascular Neurology UC San DiegoLa JollaCaliforniaUSA Department of Clinical Sciences Lewis Katz School of Medicine at Temple UniversityPhiladelphiaPennsylvaniaUSA Department of Stroke and Neurocritical Care University of Vermont College of MedicineBurlingtonVermontUSA

Background and purpose Stroke in young individuals is a serious public health *** study aimed to characterise the various phenotypes of ischaemic stroke in a young urban population(≤50 years old)using the ASCOD classification system,which assigns a score to five stroke categories:atherosclerosis,small vessel disease(SVD),cardioembolism,other and *** each category,a numerical score represents the degree of causality attributed to the *** This retrospective study cohort was composed of patients from an urban tertiary care academic *** were selected by searching Get With the Guidelines database for adults≤50 years old with ischaemic *** study sample included 175 ischaemic strokes in 157 patients,with 16 subjects *** retrospective chart review,each stroke was scored according to the ASCOD classification *** logistic regression analyses were performed to explore each ASCOD category’s association with causal risk *** Of possible causal mechanisms,defined as receiving a grade 1 or 2,a cardiovascular aetiology was most prevalent(25.7%),followed by SVD(22.3%),and closely by atherosclerosis(21.1%).Of general phenotypes,defined as receiving a grade 1 or 2 or 3,atherosclerosis was the most prevalent(51.4%),followed by SVD(47.4%),cardioembolism(42.3%)and other(35.4%).31.6%of all strokes were of unclear *** between 45 and 50 years old were more likely to develop a cardioembolic or SVD stroke when compared with subjects<45 years *** This study took a novel approach to ASCOD phenotyping,allowing several observations:(1)In patients with advanced atherosclerosis receiving the score A1,the vast majority had systemic atherosclerosis in multiple vascular territories;(2)the cardiac score C2(6),defined as a radiographic pattern highly suggestive of a central embolic source,may overestimate the prevalence of true cardiac disease;(3)incidental laboratory findings may detec

关键词： ASCO character category