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Sharp Heat Kernel Estimates in the Fourier–Bessel Setting for a Continuous Range of the Type Parameter

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Acta Mathematica Sinica,English Series 2014年第3期30卷 437-444页

作者： Adam NOWAK luz RONCAL Instytut Matematyczny Polska Akademia Nauk Departamento de Matemáticas y Computación Universidad de La Rioja

The heat kernel in the setting of classical Fourier-Bessel expansions is defined by an os- cillatory series which cannot be computed explicitly. We prove qualitatively sharp estimates of this kernel. Our method relies on establishing a connection with a situation of expansions based on Jacobi polynomials and then transferring known sharp bounds for the related Jacobi heat kernel.

关键词： Fourier-Bessel expansions heat kernel Bessel process transition density

Gastric cancer research in Mexico:A public health priority

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World Journal of Gastroenterology 2014年第16期20卷 4491-4502页

作者： Clara luz Sampieri Mauricio Mora Instituto de Salud Pública Universidad VeracruzanaAv. Luis Castelazo AyalaCol. Industrial ánimas91190 XalapaVeracruzMéxico Facultad de Medicina Universidad Veracruzana.Médicos y OdontólogosCol. Virginia Cordero91120 XalapaVeracruzMéxico

This study aimed review studies conducted on Mexican patients diagnosed with gastric cancer and/or diseases associated with its development,in which at least one Mexican institute has participated,and to assess their contributions to the primary and secondary prevention of this disease.A search of the Medline database was conducted using the following keywords:gastric/stomach cancer,*** of the Mexican population were selected in which at least one Mexican Institute had participated and where the findings could support public policy proposals directed towards the primary or secondary prevention of gastric *** the148 studies found in the Medline database,100 were discarded and 48 were *** to the analysis presented,these studies were classified as:epidemiology of gastric cancer(5/48);risk factors and protectors relating to gastric cancer(9/48);relationship between Helicobacter pylori and pathologies associated with gastric cancer and the development of the disease(16/48);relationship between the Epstein-Barr virus and pathologies associated with gastric cancer and the development of the disease(3/48);molecular markers for the development of diseases associated with gastric cancer and gastric cancer(15/48).Mexico requires a program for the prevention and control of gastric cancer based on national health *** should be produced by a multidisciplinary committee of experts who can propose actions that are relevant in the current national *** few studies of gastric cancer conducted on the Mexican population in national institutes highlight the poor connection that currently exists between the scientific community and the health sector in terms of resolving this health *** policies for health research should support projects with findings that can be translated into benefits for the *** review serves to identify national research groups studying gastric cancer in the Mexican population.

关键词： Gastric cancer Mexico Research Prevention Public health

Attitude toward preventive counseling and healthy practices among medical students at a Colombian university

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Frontiers of Medicine 2015年第2期9卷 251-259页

作者： luz Helena Alba Nora Badoui Fabian Gil Department of Preventive and Social Medicine Pontificia Universidad Javeriana Bogota Colombia Department of Clinical Epidemiology and Biostatistics Pontificia Universidad Javeriana Bogota Colombia

Unhealthy behaviors of medical students influence their attitudes toward preventive counseling. The burden of chronic diseases is continually growing in developing countries, emphasizing the need for the increased role of general practitioners in preventive counseling. The objective of this study was to describe the effect of medical training on the risk profiles and attitudes of medical students toward preventive counseling in a Colombian university. Students in their first and fifth years of training were surveyed using the ＂Healthy Doctor = Healthy Patient＂ questionnaire to assess counseling attitudes; personal practices, such as risky drinking, smoking, inadequate nutrition, and non-compliance with physical activity recommendations; and the university environment. The association among these components was estimated, as well as the effect of the university environment. Risky drinking and smoking decreased from first to fifth year （59.3% vs. 37.1%, P = 0.021 and 31.5~ vs. 25.9%, P = 0.51, respectively）, whereas inadequate nutrition and non-compliance with physical activity recommendations increased. Physical activity （PA） was associated with positive counseling attitude （ORs： nutrition 7.6; alcohol 5.2; PA 10.6）. Areas governed by institutional policies that are emphasized in the curriculum positively affected student practices. PA promoted preventive counseling and healthy lifestyles most effectively. Universities should therefore strengthen their preventive medicine curricula and modify social determinants.

关键词： lifestyle medical students preventive medicine counseling universities schools medical

On the notions of singular domination and(multi-)singular hyperbolicity

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Science China Mathematics 2020年第9期63卷 1721-1744页

作者： Sylvain Crovisier Adriana da luz Dawei Yang Jinhua Zhang Laboratoire de Mathematiques d'Orsay CNRSUniversite Paris-SudOrsay 91405France Beijing International Center for Mathematical Research Peking UniversityBeijing 100871China School of Mathematical Sciences Soochow UniversitySuzhou 215006China School of Mathematical Sciences Beihang UniversityBeijing 100191China

The properties of uniform hyperbolicity and dominated splitting have been introduced to study the stability of the dynamics of *** meets difficulties when trying to extend these definitions to vector fields and Shantao Liao has shown that it is more relevant to consider the linear Poincare flow rather than the tangent flow in order to study the properties of the *** this paper,we define the notion of singular domination,an analog of the dominated splitting for the linear Poincar´e flow which is robust under *** on this,we give a new definition of multi-singular hyperbolicity which is equivalent to the one recently introduced by Bonatti and da luz(2017).The novelty of our definition is that it does not involve the blow-up of the singular set and the rescaling cocycle of the linear flows.

关键词： multi-singular hyperbolicity singular domination star vector field linear Poincar´e flow

The Hour of the Star: Life and Writing of Clarice Lispector

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Journal of Foreign Languages and Cultures 2023年第1期7卷 89-102页

作者： Mary luz Estupinan Serrano Pontifical Catholic University of Valparaiso

Clarice Lispector is one of the most important Brazilian writers of the 20th *** her writings,she explores the limits of the Portuguese language and creates her own literary *** article will map some of her aesthetic searches that are,at the same time,*** article is organized through two moments:a biographical one,in which relevant aspects of her life that will have an echo in her work are indicated;and another focused on her fiction writing,in which the aesthetic commitment of her books is *** Hour of the Star is the title of her latest novel,a title read by Helene Cixous as an anticipatory metaphor for her own *** return to it as a trope,no longer to refer to its finiteness but to celebrate its opportune rereading outside Latin America.

关键词： Clarice Lispector Brazil life writing literature

Celiac disease screening in patients with cryptogenic cirrhosis

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World Journal of Gastroenterology 2023年第2期29卷 410-412页

作者： Janaina luz Narciso-Schiavon Leonardo Lucca Schiavon Gastroenterology Division Internal Medicine DepartmentFederal University of Santa CatarinaFlorianopolis 88040-900SCBrazil

We write a letter to the editor commenting the article“Who to screen and how to screen for celiac disease”.We discuss the present literature on cirrhosis and celiac disease(CD)and recommend screening and treating CD... 详细信息

关键词： Celiac disease Liver cirrhosis Liver failure Aspartate aminotransferase Alanine aminotransferase

Interpolation of Ideal Measures by Abstract K and J Spaces

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Acta Mathematica Sinica,English Series 2007年第8期23卷 1357-1374页

作者： luz M.FERNNDEZ-CABRERA Antón MARTíNEZ Sección Departamental de Matemática Aplicada Escuela de EstadísticaUniversidad Complutense de Madrid28040 MadridSpain Departamento de Matemática Aplicada I E.T.S.Ingenieros IndustrialesUniversidad de Vigo36200

We work with the abstract K and J interpolation method generated by a sequence lattice Г. We investigate the deviation of an interpolated operator from a given operator ideal by establishing formulae for the ideal measure of the interpolated operator in terms of the ideal measures of restrictions of the operator. Formulae are given in terms of the norms of the shift operators on Г.

关键词： real interpolation ideal measures operator ideals shift operators

To screen or not to screen? Celiac antibodies in liver diseases

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World Journal of Gastroenterology 2017年第5期23卷 776-791页

作者： Janaína luz Narciso-Schiavon Leonardo Lucca Schiavon Department of Internal Medicine Division of GastroenterologyFederal University of Santa CatarinaSanta Catarina 88040-900Brazil

Celiac disease(CD) is a systemic immune-mediated disorder triggered by dietary gluten in genetically predisposed individuals. The typical symptoms are anemia, diarrhea, fatigue, weight loss, and abdominal pain. CD has been reported in patients with primary sclerosing cholangitis, primary biliary cholangitis, autoimmune hepatitis, aminotransferase elevations, nonalcoholic fatty liver disease, hepatitis B, hepatitis C, portal hypertension and liver cirrhosis. We evaluate recommendations for active screening for CD in patients with liver diseases, and the effect of a gluten-free diet in these different settings. Active screening for CD is recommended in patients with liver diseases, particularly in those with autoimmune disorders, steatosis in the absence of metabolic syndrome, noncirrhotic intrahepatic portal hypertension, cryptogenic cirrhosis, and in the context of liver transplantation. In hepatitis C, diagnosis of CD can be important as a relative contraindication to interferon use. Gluten-free diet ameliorates the symptoms associated with CD; however, the associated liver disease may improve, remain the same, or progress.

关键词： Celiac disease Cholangitis Sclerosing Liver cirrhosis Biliary Hypertension Portal Hepatitis Autoimmune

Genetic variation at the p53 locus of two ecologically divergent Microtus pine voles:identification of molecular markers for species assignment

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Integrative Zoology 2022年第6期17卷 1179-1192页

作者： Ana Sofia QUINA João Paulo TAVANEZ Maria da luz MATHIAS CESAM-Centro de Estudos do Ambiente e do Mar Departamento de BiologiaUniversidade de AveiroAveiroPortugal CESAM-Centro de Estudos do Ambiente e do Mar Faculdade de CiênciasUniversidade de LisboaLisboaPortugal Departamento de Biologia Animal Faculdade de CiênciasUniversidade de LisboaLisboaPortugal Global Health and Tropical Medicine(GHTM) Instituto de Higiene e Medicina Tropical(IHMT)Universidade NOVA de Lisboa(UNL)Portugal

The Lusitanian(Microtus lusitanicus)and the Mediterranean(Microtus duodecimcostatus)pine voles are recently diverged sister species endemic of the Iberian Peninsula that can be identiﬁed with ecological and morphological characters,but in areas where the 2 species co-occur,species designation may be difﬁ*** discrimination between *** and *** has not been achieved yet possibly because of their estimated re-cent split and an evolutionary history that includes inter-species geneﬂ*** our previous observations on exons 5–7 of the p53 gene,here we analyze the potential use of the p53 genomic region as a discrimination marker of these species by extending our analyses to several kb upstream and downstream of the p53 gene and charac-terizing the degree of genetic differentiation in 7 markers within this ***,we fully sequenced the P53 protein of both *** observed:(i)generally high differentiation in this region;(ii)*** showed in general higher values of nucleotide and haplotype diversities;(iii)the concatenated phylogenetic tree separates the 2 species;(iv)the 2 P53 proteins only differ in 1 amino acid;(v)4 of the markers,2 in p53,one in Atp1b2,and another in Wrap53,contain species-speciﬁc genetic variation thus allowing a reliable discrimination between specimens from both species,irrespective of sampling location or introgression *** provide ad-ditional data on the putative role of p53 in the evolution of these species and present researchers with a fast and cost-effective resource for *** and *** identiﬁcation.

关键词： ecological stress genetic variation Microtus molecular marker p53