检索结果-南通市图书馆

Exploring research on ecotechnology through artificial intelligence and bibliometric maps

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Environmental Science and Ecotechnology 2024年第5期21卷 405-412页

作者： ricardo Ruiz-Sanchez ricardo Arencibia-Jorge Julia Tagüena Jose luis Jimenez-Andrade Humberto Carrillo-Calvet Unidad Profesional Interdisciplinaria de Ingeniería Palenque(UPIIP) Instituto Politecnico NacionalPalenqueChiapasCP 29960Mexico Complexity Sciences Center National Autonomous University of MexicoCircuito Centro Cultural s/nCoyoacan04510Mexico CityMexico Institute of Renewable Energies(IER) National Autonomous University of MexicoPriv.Xochicalco s/nCol.CentroTemixcoMorelosCP 62580Mexico Faculty of Sciences National Autonomous University of MexicoCircuito Centro Cultural s/nCoyoacan04510Mexico CityMexico

Ecotechnology,quintessential for crafting sustainable socio-environmental strategies,remains tantalizingly *** analysis,steered by the nuances of machine learning and augmented by bibliometric insights,delineates the expansive terrain of this domain,elucidates pivotal research themes and conundrums,and discerns the vanguard nations in this ***,we deftly connect our discoveries to the United Nations'2030 Sustainable Development Goals,thereby accentuating the profound societal ramifications of ecotechnology.

关键词： Ecotechnologies Bibliometrics Sustainable development goals Network analysis SOM neural networks

Influence of biomass burning on ozone levels in the Megalopolis of Central Mexico during the COVID-19 lockdown

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第9期143卷 99-115页

作者： Victor Almanza luis Gerardo Ruiz-Suárez ricardo Torres-Jardón Agustín García-Reynoso Iván Y.Hernández-Paniagua Institute for Atmospheric Sciences and Climate Change National Autonomous University of MexicoCoyoacan 04510Mexico CityMexico

The massive reductions in anthropogenic emissions resulting from the COVID-19 lockdown provided a unique opportunity to evaluate the effect of mitigation measures aiming to abate air *** Mexico,the total lockdown period took place during the dry-hot season when biomass burning activity is ***,we investigate the role of biomass burning emissions on regional ozone levels in the Megalopolis of Central *** studied period covers the lockdown phases 2 and 3,and the first month of the New *** applied a factor separation technique and process analysis to estimate the pure and synergistic contributions of emission reductions under lockdown and that from biomass burning to daily ozone maximum concentrations in 7 metropolitan areas of different states in the *** results revealed that biomass burning plumes likely masked the effect of massive reductions from mobile emissions,impacted the PBL development during phase 3 and favored transition and mixed NO_(x)-limited and VOC-limited regional *** contributed to increased ozone production in the middle to lower PBL by changing the regional background levels which potentially could bias high ozone production efficiency *** the Megalopolis contribution to economic and societal development at national scale,our study suggests that ozone mitigation measures during the dry-hot season targeting mainly mobile emissions will likely be offset by biomass burning plumes.A regional and synergic policy aiming to control biomass burning would help to reduce the occurrence of high ozone levels in Central Mexico with the co-benefit of tackling short-lived climate pollutants.

关键词： COVID-19 Mexico Megalopolis Ozone Factor Separation Process Analysis

Insights into the origin of precipitation moisture for tropical cyclones during rapid intensification process

在线全文

学校读者我要写书评

暂无评论

Tropical Cyclone Research and Review 2024年第2期13卷 72-87页

作者： Albenis Perez-Alarcon Jose C.Fernandez-Alvarez ricardo M.Trigo Raquel Nieto luis Gimeno Centro de Investigacion Mari~na Universidade de VigoEnvironmental Physics Laboratory(EPhysLab)Campus As Lagoas s/nOurenseSpain Departamento de Meteorología Instituto Superior de Tecnologías y Ciencias AplicadasUniversidad de La HabanaLa HabanaCuba Instituto Dom Luiz(IDL) Facultade de Ci^enciasUniversidade de LisboaLisboaPortugal Departamento de Meteorologia Universidade Federal do Rio de JaneiroRio de JaneiroBrazil

In this study,we identiﬁed the moisture sources for the precipitation associated with tropical cyclones(TCs)during the rapid intensiﬁcation(RI)process from 1980 to 2018 by applying a Lagrangian moisture source diagnostic *** detected sixteen regions on a global scale for RI events distributed as follows:four in the North Atlantic(NATL),two in the Central and East Paciﬁc Ocean(NEPAC),the North Indian Ocean(NIO)and South Indian Ocean(SIO),and three in the South Paciﬁc Ocean(SPO)and the Western North Paciﬁc Ocean(WNP).The moisture uptake(MU)mostly was from the regions where TCs underwent *** Western NATL,tropical NATL,Caribbean Sea,the Gulf of Mexico and the Central America and Mexico landmass supported~85.4%of the precipitating moisture in the NATL,while the latter source and the eastern North Paciﬁc Ocean provided the higher amount of moisture in NEPAC(~84.3%).The Arabian Sea,the Bay of Bengal and the Indian Peninsula were the major moisture sources in NIO,contributing approximately 81.3%.The eastern and western parts of the Indian Ocean supplied most of the atmospheric humidity in SIO(~83.8%).The combined contributions(~87.9%)from the western and central SPO and the Coral Sea were notably higher in ***,TCs in the WNP basin mostly received moisture from the western North Paciﬁc Ocean,the Philippine Sea and the China Sea,accounting for 80.1%.The remaining moisture support in each basin came from the summed contributions of the remote ***,RI TCs gained more moisture up to 2500 km from the cyclone centre than those slow intensiﬁcation(SI)and the total MU was approximately three times higher during RI than ***,the patterns of the MU differences respond to the typical pathways of moisture transport in each basin.

关键词： Tropical cyclones Rapid intensiﬁcation Moisture sources Precipitation Lagrangian moisture tracking

Association between Helicobacter pylori infection,mismatch repair,HER2 and tumor-infiltrating lymphocytes in gastric cancer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第6期16卷 2487-2503页

作者： Carlos A Castaneda Miluska Castillo luis A Bernabe Joselyn Sanchez Matteo Fassan Katherine Tello Ignacio Ivan Wistuba Ivan Chavez Passiuri Eloy Ruiz Juvenal Sanchez Fernando Barreda Daniel Valdivia Yaqueline Bazan Milagros Abad-Licham Claudio Mengoa Hugo Fuentes Paola Montenegro Ebert Poquioma Raul Alatrista Claudio J Flores luis Taxa Faculty of Health Sciences Universidad Cientifica del SurLima 15038Peru GECO PERU Grupo de Estudios Clinicos Oncologicos del PeruLima 15038Peru Department of Research Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Faculty of Human Medicine Universidad Ricardo PalmaLima 15039Peru Department of Medicine Surgical Pathology&Cytopathology UnitUniversity of PaduaPadua 35121Italy Department of Translational Molecular Pathology The University of Texas MD Anderson Cancer CenterHoustonTX 77030United States Department of Abdominal Surgery Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Pathology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Medical Specialties Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Pathology Instituto Regional de Enfermedades Neoplasicas del NorteTrujillo 13001Peru Faculty of Human Medicine Universidad Privada Antenor OrregoTrujillo 13008Peru Department of Surgery Instituto Regional de Enfermedades Neoplasicas del SurArequipa 04002Peru Department of Medical Oncology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Epidemiology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Unidad de Investigación Básica y Traslacional Oncosalud-AUNALima 15038Peru Faculty of Medicine Universidad San Martin de PorresLima 15008Peru

BACKGROUND The influence of Helicobacter-pylori(***)infection and the characteristics of gastric cancer(GC)on tumor-infiltrating lymphocyte(TIL)levels has not been extensively *** of infiltrating-immune-cell subtypes as well as survival is necessary to obtain comprehensive *** To determine the rates of deficient mismatch-repair(dMMR),HER2-status and *** infection and their association with TIL levels in *** Samples from 503 resected GC tumors were included and TIL levels were evaluated following the international-TILs-working-group recommendations with assessment of the intratumoral(IT),stromal(ST)and invasive-border(IB)*** density of CD3,CD8 and CD163 immune cells,and dMMR and HER2-status were determined by immunohistochemistry(IHC).*** infection was evaluated by routine histology and quantitative PCR(qPCR)in a subset of *** dMMR was found in 34.4%,HER2+in 5%and ***-positive in 55.7%of *** IT-TIL was associated with grade-3(P=0.038),while ST-TIL with grade-1(P<0.001),intestinal-histology(P<0.001)and no-recurrence(P=0.003).dMMR was associated with high TIL levels in the ST(P=0.019)and IB(P=0.01)compartments,and STCD3(P=0.049)and ST-CD8(P=0.05)***2-was associated with high IT-CD8(P=0.009).*** was associated with high IT-TIL levels(P=0.009)when assessed by routine-histology,and with high TIL levels in the 3 compartments(P=0.002-0.047)and CD8 density in the IT and ST compartments(P=0.001)when assessed by qPCR.A longer overall survival was associated with low IT-CD163(P=0.003)and CD8/CD3(P=0.001 in IT and P=0.002 in ST)and high IT-CD3(P=0.021),ST-CD3(P=0.003)and CD3/CD163(P=0.002).CONCLUSION TIL levels were related to dMMR and *** CD8/CD3 and high CD163/CD3 were associated with lower recurrence and longer survival.

关键词： Lymphocytes Macrophages Gastric cancer Helicobacter pylori HER2 Mismatch repair

Distributed representations of atoms and materials for machine learning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

npj Computational Materials 2022年第1期8卷 415-423页

作者： luis M.Antunes ricardo Grau-Crespo Keith T.Butler Department of Chemistry University of ReadingWhiteknightsReadingRG66DXUK SciML Scientific Computing DepartmentRutherford Appleton LaboratoryHarwellOX110QXUK

The use of machine learning is becoming increasingly common in computational materials *** build effective models of the chemistry of materials,useful machine-based representations of atoms and their compounds are *** derive distributed representations of compounds from their chemical formulas only,via pooling operations of distributed representations of *** compound representations are evaluated on ten different tasks,such as the prediction of formation energy and band gap,and are found to be competitive with existing benchmarks that make use of structure,and even superior in cases where only composition is ***,we introduce an approach for learning distributed representations of atoms,named SkipAtom,which makes use of the growing information in materials structure databases.

关键词： representations operations competitive

Kinetic analysis via mathematical modeling for ferrous iron oxidation in a class of SBR-type system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2019年第10期27卷 2472-2480页

作者： Edgar NTec-Caamal Refugio Rodríguez-Vázquez luis GTorres-Bustillos ricardo Aguilar-López Center for Research and Advanced Studies of the National Polytechnic Institute Av.Instituto Politécnico Nacional No.2508Colonia San Pedro ZacatencoC.P.07360 Ciudad de México D.F.Mexico Interdisciplinary Professional Unit of Biotechnology-National Polytechnic Institute(UPIBI-IPN) Acueducto s/nLa Laguna TicománGustavo A.Madero07340Ciudad de MéxicoMexico

This paper analyses the oxidation of ferrous iron via chemical and biological means in a class of Sequential Batch Reactors(SBR-type).For this,a kinetic model for the study of iron oxidation system is proposed,followed by a parametric sensitivity analysis and a bifurcation analysis,which allow selecting the most influential kinetic parameters in order to ensure a suitable prediction capacity of the mathematical *** system consists of two SBR bioreactors,the first being used to produce hydrogen peroxide(H2O2)that is fed to a second reactor where the iron oxidation is carried out by chemical–biological *** predictions were compared with experimental data for the production of H2O2 and for ferrous iron oxidation,finding suitable correlation coefficients(r2 N 0.98)for each state *** bifurcation analysis showed the trajectories of the main variables,such as,biomass,H2O2 and ferrous iron,under the change of the most influential kinetic *** analysis demonstrates the usefulness of the constructed model to predict the kinetic behaviour of the SBR-type process.

关键词： Bifurcation analysis Hydrogen peroxide Iron oxidation Modeling Simulation

An updated overview on the development of new photosensitizers for anticancer photodynamic therapy

在线全文

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2018年第2期8卷 137-146页

作者： Juan Zhang Chengshi Jiang Joao Paulo Figueiró Longo ricardo Bentes Azevedo Hua Zhang luis Alexandre Muehlmann School of Biological Science and Technology University of Jinan Institute of Biological Sciences University of Brasilia Faculty of Ceilandia University of Brasilia

Photodynamic therapy(PDT), based on the photoactivation of photosensitizers(PSs), has become a well-studied therapy for cancer. Photofrin~?, belonging to the first generation of PS, is still widely used for the treatment of different kinds of cancers; however, it has several drawbacks that significantly limit its general clinical use. Consequently, there has been extensive research on the design of PS molecules with optimized pharmaceutical properties, with aiming of overcoming the disadvantages of traditional PS, such as poor chemical purity, long half-life, excessive accumulation into the skin, and low attenuation coefficients. The rational design of novel PS with desirable properties has attracted considerable research in the pharmaceutical field. This review presents an overview on the classical photosensitizers and the most significant recent advances in the development of PS with regard to their potential application in oncology.

关键词： Anti-cancer Photosensitizers Photodynamic therapy Photochemical reactions Oncology BODIPY

Evolution of the Socio-cognitive Structure of Knowledge Management(1986–2015): An Author Co-citation Analysis

在线全文

学校读者我要写书评

暂无评论

Journal of Data and Information Science 2019年第2期4卷 36-55页

作者： Carlos luis González-Valiente Magda León Santos ricardo Arencibia-Jorge Biblioteca Nacional de Cuba "José Martí" ave.Independencia Facultad de Comunicación Universidad de la Habana San Pedro entre Ermita y Avenida Independencia Empresa de Tecnologías de la Información

Purpose: The evolution of the socio-cognitive structure of the field of knowledge management(KM) during the period 1986–2015 is described. Design/methodology/approach: Records retrieved from Web of Science were submitted to author co-citation analysis(ACA) following a longitudinal perspective as of the following time slices: 1986–1996, 1997–2006, and 2007–2015. The top 10% of most cited first authors by sub-periods were mapped in bibliometric networks in order to interpret the communities formed and their ***: KM is a homogeneous field as indicated by networks results. Nine classical authors are identified since they are highly co-cited in each sub-period, highlighting Ikujiro Nonaka as the most influential authors in the field. The most significant communities in KM are devoted to strategic management, KM foundations, organisational learning and behaviour, and organisational theories. Major trends in the evolution of the intellectual structure of KM evidence a technological influence in 1986–1996, a strategic influence in 1997–2006, and finally a sociological influence in 2007–*** limitations: Describing a field from a single database can offer biases in terms of output coverage. Likewise, the conference proceedings and books were not used and the analysis was only based on first authors. However, the results obtained can be very useful to understand the evolution of KM *** implications: These results might be useful for managers and academicians to understand the evolution of KM field and to(re)define research activities and organisational ***/value: The novelty of this paper lies in considering ACA as a bibliometric technique to study KM research. In addition, our investigation has a wider time coverage than earlier articles.

关键词： Knowledge management Bibliometrics Author co-citation analysis Knowledge domain visualization Social network analysis Intellectual structure

Understanding how MSCs reverse radiation-induced fibrosis:HGF ***-B1

在线全文

学校读者我要写书评

暂无评论

Plastic and Aesthetic Research 2023年第1期10卷 28-45页

作者： ricardo luis Rodriguez Department of plastic surgery CosmeticsurgLuthervilleMD 21093USA

Radiation induced fibrosis(RIF)can be understood as a form of chronic radiation-induced bystander effect(RIBE).It is a fibrotic process different than acute radiation syndrome(ARS),which is an inflammatory process that has different mediators and effector *** is triggered by Reactive Oxygen Species(ROS)activation of the matrixembedded L-TGF-β***-βacts by directing cellular processes that culminate in a fibrotic *** include epithelial and endothelial mesenchymal transition(EMT and EnMT),G1 phase growth arrest,stimulation of fibrosis,and apoptosis,characterized by hypocellularity with a predominance of fibrocytes and myofibroblasts,fibrosis,and variable loss of tissue *** grafting is the only clinically available tool to reverse *** reversal of RIF is mediated by the mesenchymal stem cells(MSCs)embedded in the stromal vascular fraction(SVF)adipose *** mechanism of action is the release of HGF(hepatocyte growth factor)by the MSCs into the surrounding RIF *** HGF initiates a“mitotic growth program”that reprograms cell *** changes include EMT and EnMT,stimulation of cell proliferation and morphogenesis,anti-apoptosis,downregulation of TGF-β,dissolution of fibrosis,and cell ***“mitotic growth program”culminates in tissue regeneration and reversal of RIF.

关键词： HGF TGF-β RIF radiation-induced fibrosis fat grafting MSC