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On a Classical Theorem on the Diameter and Minimum Degree of a Graph

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Acta Mathematica Sinica,English Series 2017年第11期33卷 1477-1503页

作者： Veronica HERNANDEZ domingo PESTANA jose M. RODRIGUEZ Universidad CarlosⅢde Madrid Avenida de la Universidad3028911 LeganesSpain

In this work, we obtain good upper bounds for the diameter of any graph in terms of its minimum degree and its order, improving a classical theorem due to Erdos, Pach, Pollack and Tuza. We use these bounds in order to study hyperbolic graphs （in the Gromov sense）. To compute the hyperbolicity constant is an almost intractable problem, thus it is natural to try to bound it in terms of some parameters of the graph. Let H（n, δ0） be the set of graphs G with n vertices and minimum degree 50, and J（n, Δ） be the set of graphs G with n vertices and maximum degree A. We study the four following extremal problems on graphs： a（n,δ0） = min{δ（G）｜ G ∈H（n, δ0）}, b（n, δ0） =- max{δ（G）｜ e ∈H（n, δ0）}, α（n, Δ） = min{δ（G） [ G ∈ J（n, Δ）} and β（n,Δ） = max{δ（G） ] G∈Π（n,Δ）}. In particular, we obtain bounds for b（n, δ0） and we compute the precise value of a（n, δ0）, α（n, Δ） and w（n, Δ） for all values of n, r0 and A, respectively.

关键词： Extremal problems on graphs diameter minimum degree maximum degree Gromov hyperbolicity hyperbolicity constant finite graphs

A practical approach with drones,smartphones,and tracking tags for potential real-time animal tracking

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Current Zoology 2023年第2期69卷 208-214页

作者： Geison P Mesquita Margarita Mulero-Pazmany Serge A Wich jose domingo Rodriguez-Teijeiro Department of Animal Biology Plant Biology and EcologyAutonomous University of Barcelona08193Cerdanyola del VallesBarcelonaSpain Instituto Baguacu de Pesquisa em Biodiversidade(IBPBio) 65050849Sao LuisMaranhaoBrazil Grupo de Biogeografia Diversidad y ConservacionDepartamento de Biologia AnimalFacultad de CienciasUniversidad de MalagaBlvr.Louis Pasteur3129010MalagaSpain School of Biological and Environmental Sciences Liverpool John Moores UniversityLiverpool L35UGUK Department of Evolutionary Biology Ecology and Environmental SciencesFaculty of BiologyUniversity of Barcelona08028BarcelonaSpain Biodiversity Research Institute(IRBio) University of BarcelonaBarcelona08193Spain

Drones are increasingly used for fauna monitoring and wildlife tracking;however,their application for wildlife tracking is restricted by developing such *** we explore the potential of drones for wildlife tracking using an off-the-shelf system that is easy to use by non-specialists consisting of a multirotor drone,smartphones,and commercial tracking devices via Bluetooth and Ultra-Wide Band(UWB).We present the system configuration,explore the operational parameters that can affect detection capabilities,and test the effectiveness of the system for locating targets by simulating target animals in savanna and forest *** self-contained tracking system was built without hardware or software *** 40 tracking flights carried out in the Brazilian Cerrado,we obtained a detection rate of 90%in savanna and 40%in forest *** for targets in movement(N=20),the detection rates were 90%in the savanna and 30%in the forest *** spatial accuracy obtained by the system was 14.61 m,being significantly more accurate in savanna(x=10.53)than in forest areas(x=13.06).This approach to wildlife tracking facilitates the use of drones by non-specialists at an affordable cost for conservation projects with limited *** reduced size of the tags,the long battery life,and the iower cost compared to GPS-tags open up a range of opportunities for animal tracking.

关键词： conservation drone small surveys wildlife tracking

Nanostructured biohybrid material with wide-ranging antiviral action

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Nano Research 2023年第8期16卷 11455-11463页

作者： Noelia Losada-Garcia Angela Vazquez-Calvo David Ortega-Alarcon Olga Abian Adrian Velazquez-Campoy Pilar domingo-Calap Antonio Alcami jose M.Palomo Instituto de Catálisis y Petroleoquímica(ICP) CSICC/Marie Curie 2.Madrid 28049Spain Centro de Biología Molecular Severo Ochoa Consejo Superior de Investigaciones Científicas(CSIC)-Universidad Autónoma de Madrid(UAM)Madrid 28049Spain Institute of Biocomputation and Physics of Complex Systems(BIFI) Joint Unit GBsC-CSIC-BIFIUniversity of ZaragozaZaragoza 50018Spain Fundación Instituto de Investigación Sanitaria de Aragón(IIS Aragón) Zaragoza 50009Spain CIBERehd Madrid 28029Spain Instituto de Biología Integrativa de Sistemas I2SyBioUniversitat de València-CSICValència E-46071Spain

Respiratory pathogens kill more people than any other infectious agent each year *** of novel,economically friendly,sustainable,and highly efficient materials against viruses is a major ***,we describe a nanostructured material composed of very small crystalline phosphate copper nanoparticles synthesized using a new biohybrid technology that employs a biological agent for its formation at room temperature in aqueous *** evaluation of different enzymes in the final preparation of the nanomaterial or even in synthetic methods was *** characterization revealed the formation of Cu species in the protein *** best biomaterial synthesized using a lipase called BioCuNPs showed excellent inhibition capacity against functional proteins of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2);for example,assent 3-chymotrypsin like protease(3CLpro)complete inhibition was achieved by using 5µg/mL,or acetone(ACE)–spike protein interaction was inhibited by more than 80%in the presence of 400µg/mL of *** these in vitro results into account,an efficacy analysis against human coronavirus 229E(HCoV-E229)coronavirus was performed.A virus reduction of 99%was obtained in 5 ***,SARS-CoV-2 virus was tested to demonstrate high efficiency,with>99%inhibition in 15 min using 500 microgram of *** determine the wide applicability of this nanohybrid against viruses,an evaluation was carried out against a non-enveloped virus such as Human Rhinovirus(HRV-14),obtaining a virus reduction of 99.9%in 5 ***,the virucidal capacity against different bacteriophages was also evaluated,obtaining an excellent inhibition effect against PhageΦX174(99.999%reduction in 5 min).

关键词： antiviral compound coronaviruses copper nanoparticles nanobiotechnology viruses

Current impact of viral hepatitis on liver cancer development: The challenge remains

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World Journal of Gastroenterology 2021年第24期27卷 3556-3567页

作者： Ângelo Zambam de Mattos jose D Debes Andre Boonstra Ju-Dong Yang domingo C Balderramo Giovana D P Sartori Angelo Alves de Mattos Department of Gastroenterology and Hepatology Federal University of Health Sciences of Porto AlegrePorto Alegre 90020-090Brazil Gastroenterology and Hepatology Unit Irmandade Santa Casa de Misericórdia de Porto AlegrePorto Alegre 90050-170Brazil Department of Medicine Division of Gastroenterology and Infectious DiseasesUniversity of MinnesotaMinneapolisMN 55455United States Department of Gastroenterology and Hepatology Erasmus Medical CenterRotterdam NL-3015Netherlands Division of Digestive and Liver Diseases Department of MedicineCedars-Sinai Medical CenterLos AngelesCA 90048United States Department of Gastroenterology Hospital Privado Universitario de CórdobaCórdoba 5016Argentina Department of Medicine Instituto Universitario de Ciencias Biomédicas de CórdobaCórdoba 5016Argentina Department of Internal Medicine Hospital Nossa Senhora da ConceiçãoPorto Alegre 91350-200Brazil

Chronic infections due to hepatitis B and hepatitis C viruses are responsible for most cases of hepatocellular carcinoma(HCC)worldwide,and this association is likely to remain during the next ***,viral hepatitis-related HCC imposes an important burden on public health in terms of disability-adjusted life *** order to reduce such a burden,some major challenges must be *** vaccination against hepatitis B virus,especially in the neonatal period,is probably the most relevant primary preventive measure against the development of ***,considering the large adult population already infected with hepatitis B and C viruses,it is also imperative to identify these individuals to ensure their access to *** hepatitis B and C currently have highly effective therapies,which are able to diminish the risk of development of liver ***,it is essential for individuals at high-risk of HCC to be included in surveillance programs,so that tumors are detected at an early *** with hepatitis B or C and advanced liver fibrosis or cirrhosis benefit from being followed in a surveillance *** hepatitis B virus is oncogenic and capable of leading to liver cancer even in individuals with early stages of liver fibrosis,other high-risk groups of patients with hepatitis B are also candidates for *** effort is required concerning these strategies in order to decrease the incidence and the mortality of viral hepatitis-related HCC.

关键词： Hepatitis B virus Hepatitis C virus Hepatocellular carcinoma Epidemiology Vaccination Surveillance

Philippine retinoblastoma initiative multi-eye center study 2010-2020

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International Journal of Ophthalmology(English edition) 2024年第1期17卷 144-156页

作者： Roland joseph D.Tan Gary John V.Mercado Patricia E.Cabrera Paulita Pamela P.Astudillo Rolando Enrique D.domingo josept Mari S.Poblete Charmaine Grace M.Cabebe Adriel Vincent R.Te Melissa Anne S.Gonzales Jocelyn G.Sy Beltran Alexis A.Aclan Jayson T.So Fatima G.Regala Kimberley Amanda K.Comia josemaria M.Castro Mara Augustine S.Galang Aldous Dominic C.Cabanlas Benedicto Juan E.Aguilar Gabrielle S.Evangelista Jo Michael Maniwan Andrei P.Martin Calvin Y.Martinez John Alfred H.Lim Rena Ivy Bascuna Rachel M.Ng Kevin B.Agsaoay Kris Zanna A.Acluba-Arao Ellaine Rose V.Apostol Beatriz M.Prieto Department of Ophthalmology and Visual Sciences Philippine General HospitalManila 1000Philippines Department of Ophthalmology Baguio General Hospital and Medical CenterBaguio City 2600Philippines Department of Ophthalmology Manila Doctors HospitalManila 1000Philippines Department of Ophthalmology Rizal Medical CenterPasig City 1600Philippines Department of Ophthalmology Jose B.Lingad Memorial Regional HospitalPampanga 2000Philippines Department of Ophthalmology Southern Philippines Medical CenterDavao City 8000Philippines Department of Ophthalmology East Avenue Medical CenterQuezon City 1100Philippines Department of Ophthalmology Northern Mindanao Medical CenterCagayan de Oro City 9000Philippines Department of Ophthalmology Cebu Velez General HospitalCebu City 6000Philippines Legazpi Eye Center Legazpi City 4500Philippines Department of Ophthalmology Cagayan Valley Medical CenterTuguegarao City 3500Philippines

AIM:To provide a comprehensive and more representative national data on the disease,especially on treatment options and outcomes,and to determine access of retinoblastoma patients from Luzon,Visayas and Mindanao to eye care,and determine if access is associated with delay in consultation,staging and ***:Cohort study of retinoblastoma patients seen in eleven institutions located in the three major areas of the Philippines namely Luzon,Vizayas and Mindanao from ***:Totally 636 patients,involving 821 eyes,were ***(57%)were from Luzon and were seen in institutions in Luzon(72%).Annually,58±10 new cases were seen with 71%having unilateral *** delay of consultation remained long at 9(3,17)mo,longest in patients with unilateral disease(P<0.02)and those from the Visayas(P<0.003).Based on the International Retinoblastoma Staging System,only 35%of patients had Stage 1 while 47%already had extraocular *** was the most common treatment received by 484 patients while intravenous chemotherapy was received by *** were 250(39%)patients alive,195(31%)dead,85(13%)abandoned,17(3%)refused and 89(14%)with no ***:This study presents the largest cohort of retinoblastoma patients in the Philippines in terms of patients’and participating institutions’number and geographical location and type of institution(private and public).It also presents more comprehensive data on the treatments used and outcomes(survival,globe salvage,and vision retention rates).Delay in consultation was still long among patients leading to advanced disease stage and lower survival *** increasing capacity to diagnose and manage retinoblastoma in the country,the delay of consultation remains long primarily due to accessibility issues to eye care institutions especially in the Visayas and financial *** delay was still significant that overall survival rate remain low.

关键词： retinoblastoma Philippines clinical profile

Albumin-bound paclitaxel as new treatment for metastatic cholangiocarcinoma: A case report

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World Journal of Clinical Oncology 2020年第10期11卷 844-853页

作者： Roberto Martin Huertas Raquel Fuentes-Mateos Juan jose Serrano domingo Elena Corral de la Fuente Mercedes Rodríguez-Garrote Medical Oncology Department Hospital Universitario Ramon y CajalMadrid 28034Spain

BACKGROUND Cholangiocarcinomas are rare and very aggressive *** patients have advanced-stage or unresectable disease at presentation,and the systemic therapies have limited ***-bound paclitaxel(nab-paclitaxel)is a solvent-free taxane that has been approved for the treatment of some cancers such as breast,non-small cell lung and pancreatic cancer,however it has not been applied to treat *** have both preclinical and clinical evidence of the efficacy of nab-paclitaxel in cholangiocarcinoma,yet no phase 3 trials have been *** SUMMARY A 63-year-old man was diagnosed in December 2016 with stage III B intrahepatic *** was performed,followed by adjuvant chemotherapy treatment with capecitabine and gemcitabine;although,the gemcitabine was suspended due to allergic reaction after two *** April 2019,metastatic cholangiocarcinoma relapse was diagnosed,and a first-line treatment with FOLFOX scheme was *** cycles were administered,producing an initial clinical improvement and decrease in blood tumor marker *** and serological progression was noted in September *** a second-line treatment,FOLFIRI was not recommended due to risk of worsening the patient’s tumor-related diarrhea.A combination therapy with gemcitabine was not feasible,as the patient had previously suffered from an allergic reaction to this *** decided to use nab-paclitaxel as a second-line treatment,and four cycles were *** clinical and serological responses were observed,and a radiological mixed response was also *** Advanced cholangiocarcinoma could be treated with nab-paclitaxel monotherapy,which should be studied in combination with other types of treatment(chemotherapy,fibroblast growth factor receptor inhibitors).

关键词： Cholangiocarcinoma Chemotherapy Albumin-bound paclitaxel Case report Metastatic Clinical trial

Current role in facial allograft transplantation:what have we learned?

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Plastic and Aesthetic Research 2016年第1期3卷 211-218页

作者： Pedro Infante-Cossio Fernando Barrera-Pulido Tomas Gomez-Cia domingo Sicilia-Castro Alberto Garcia-Perla-Garcia Purificacion Gacto-Sanchez jose Maria Hernandez-Guisado Araceli Lagares-Borrego Rocio Narros-Gimenez Juan-David Gonzalez-Padilla Department of Oral and Maxillofacial Surgery Virgen del Rocio University Hospital41013 SevilleSpain Department of Plastic and Reconstructive Surgery Virgen del Rocio University Hospital41013 SevilleSpain

Face transplant(FT)has evolved enormously in the last 10 years since the successful completion of the first facial *** procedure has become a new reconstructive option for complex facial deformities to restore the anatomy of patients with severely disfigured *** authors review the literature and discuss the main surgical,immunological,and ethical aspects as well as the results described in patients undergoing *** date there have been more than thirty FT *** main indication was post-traumatic *** all cases a standard immunosuppression was performed with three drugs,although acute rejection episodes were observed,that could be controlled with conventional immunosuppressive ***,functional and aesthetic results have been excellent at short-term and high satisfaction rate exceeded initial expectations,although long-term data are still *** complications were opportunistic *** deaths that occurred have reopened the ethical debate about the potential complications and concerns of providing informed consent to *** progresses in microsurgical techniques and preoperative planning have promoted the evolution from partial to full *** these are on the basis of accurate and careful selection of well-motivated *** next challenge will be getting new immunosuppressive treatment *** clinical experience has demonstrated the FT viability,it is still considered an experimental procedure in which we have much to learn to define its true role in the current reconstructive surgery and resolve major technical,medical and ethical problems involved.

关键词： Face transplantation composite tissue transplantation facial allograft transplantation facial reconstruction outcomes and complications of face transplantation

The Emerging eSport Market:Analyzing the Impact of Virtual and Augmented Reality

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Chinese Business Review 2020年第2期19卷 37-54页

作者： Silvia Cacho-Elizondo jose-domingo Lazaro Alvarez Victor-Ernesto Garcia IPADE Business School Mexico CityMexico ICAMI Business School GuadalajaraMexico Universidad Panamericana GuadalajaraMexico YBVR MadridSpain

This article explores the impact of immersive technologies like virtual and augmented reality on video game *** electronic games are structured under an analog scheme similar to that of the sports industry,which has given rise to a new and rapidly growing global market known as“eSports”.eSports are a confluence of innovation,strategy,and marketing,in which players,or gamers,come together and compete with the same intensity and commitment as professional *** participate in local,national,and worldwide competitions that are broadcast over a variety of media,and are sponsored by large transnational companies/*** these companies,the eSports phenomenon represents a new paradigm capable of revolutionizing the very concept of *** this article,we propose a conceptual framework through which we can analyze the business repercussions of this new technology from an integral perspective that takes into account players,sports clubs,publishers,sponsors(brands),spectators and *** this analysis of representative companies from the eSports sector,we explore their evolution and future tendencies,like virtual-reality and augmented *** industry participants agree that such groundbreaking these technologies are going to be crucial to the future of eSports because they will be the new way of playing and a marketing *** project seeks to stimulate further research into the profound technological transformation the entertainment sector is now undergoing with the digitalization and implementation of immersive *** attention will be paid to the institutionalization and professionalization of video game competitions and their progressive homologation with traditional sports.

关键词： eSports entertainment videogames Virtual-Reality(VR) Augmented-Reality(AR)

Discovery of unique African Helicobacter pylori CagAmultimerization motif in the Dominican Republic

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World Journal of Gastroenterology 2020年第45期26卷 7118-7130页

作者： Takaaki Ono Modesto Cruz Hiroyuki Nagashima Phawinee Subsomwong Junko Akada Takashi Matsumoto Tomohisa Uchida Rumiko Suzuki Celso Hosking jose A Jimenez Abreu Yoshio Yamaoka Department of Environmental and Preventive Medicine Oita University Faculty of MedicineYufu 879-5593Japan Criminal Investigation Laboratory Oita Prefectural Police HeadquartersOita 870-1117Japan Institute of Microbiology and Parasitology IMPAFaculty of ScienceAutonomous University of Santo DomingoSanto Domingo 10103Dominican Republic Department of Biomedical Research National Institute of Medicine and Diagnostic ImagingSanto Domingo 10107Dominican Republic Department of Gastroenterology Hokkaido Cancer CenterSapporo 003-0804Japan Department of Molecular Pathology Oita University Faculty of MedicineYufu 879-5593Japan Dominican-Japanese Digestive Disease Center Dr Luis E.Aybar Health and Hygiene CitySanto Domingo 10302Dominican Republic Department of Medicine Gastroenterology and Hepatology SectionBaylor College of MedicineHoustonTX 77030United States

BACKGROUND Helicobacter pylori(***)colonizes the human stomach and is a major cause of peptic ulcer disease and gastric ***,although the prevalence of *** is high in Africa,the incidence of gastric cancer is low,and this phenomenon is called to be African *** CagA protein produced by *** is the most studied virulence *** carcinogenic potential of CagA is associated with the Glu-Pro-Ile-Tyr-Ala(EPIYA)patterns and CagAmultimerization(CM)*** To better understand the EPIYA patterns and CM motifs of the cagA *** Gastric mucosal biopsy specimens were obtained from 258 patients with dyspepsia living in the Dominican Republic,from which 120 *** strains were *** the bacterial DNA extraction,the EPIYA pattern and CM motif genotypes were determined using a polymerase chain reaction-based *** population structure of the Dominican Republic strains was analyzed using multilocus sequence typing(MLST).Peptic ulcer disease and gastric cancer were identified via endoscopy,and gastric cancer was confirmed by *** scores of the gastric mucosa were evaluated using the updated Sydney *** All CagA-positive strains carried the Western-type CagA according to the identified EPIYA ***-seven kinds of CM motifs were *** the typical Western CM motif(FPLKRHDKVDDLSKVG)was observed most frequently,the typical East Asian CM motif(FPLRRSAAVNDLSKVG)was not ***,“FPLRRSAKVEDLSKVG”,similar to the typical East Asian CM motif,was found in 21 *** this type was significantly more frequent in strains classified as hpAfrica1 using MLST analysis(P=0.034),we termed it Africa1-CM(Af1-CM).A few hpEurope strains carried the Af1-CM motif,but they had a significantly higher ancestral Africa1 component than that of those without the Af1-CM motif(P=0.030).In 30 cagA-positive strains,the"GKDKGPE"motif was observed immediately upstream of the EPIYA motif in

关键词： Helicobacter pylori CagA CagA 3'region CagA-multimerization motif Glu-Pro-Ile-Tyr-Ala motif Dominican Republic