检索结果-南通市图书馆

Artificial Intelligence in Geosciences 2023年第1期4卷 209-219页

作者： Lucas Alves Salles Paulo renato pereira Silva Guilherme Schwinn Fagundes Jonas Sousasantos Alison Moraes Instituto Tecnol´ogico de Aeron´autica-ITA Sao Jos´e Dos CamposBrazil William B.Hanson Center for Space Sciences University of Texas at Dallas-UT DallasRichardsonTXUSA Instituto de Aeron´autica e Espaço-IAE S˜ao Jos´e Dos CamposSP12228-904Brazil

The vertical profile of the ionosphere density plays a significant role in the development of low-latitude Equatorial Plasma Bubbles(EPBs),that in turn lead to ionospheric scintillation which can severely degrade precision and availability of critical users of the Global Navigation Satellite System(GNSS).Accurate estimation of ionospheric delays through vertical electron density profiles is vital for mitigating GNSS errors and enhancing location-based *** objective of this study is to propose a neural network,trained with radio occultation data from the COSMIC-1 mission,that generates average ionospheric electron density profiles during dusk,focusing on the pre-reversal enhancement of the zonal electric *** show that the estimated profiles exhibit a clear seasonal pattern,and reproduce adequately the climatological behavior of the ionosphere,thus presenting strong appeal on ionospheric error attenuation.

关键词： Ionosphere density Equatorial plasma bubbles(EPBs) Ionospheric scintillation Global navigation satellite system(GNSS) Neural network modeling

Innovation Management Processes and Routines for Business Success and Value Creation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Management Studies 2017年第5期5卷 471-481页

作者： Luis Vala renato pereira Isabel Caetano Independent Researcher Lisbon Portugal OBSERVARE/UAL Lisbon Portugal ISCTE-IUL Lisbon Portugal COTEC Portugal Lisbon Portugal ISCTE-IUL Lisbon Portugal

Innovation is managed through the development of processes and routines, considered as critical for business success and value creation. The identification of relevant routines as well as the understanding of which factors affect business innovation is the main objective of this research, based on a survey applied in Portuguese companies and their experience shared in best practices guides. Conclusions highlighted 10 key innovation routines, reinforcing the idea that innovation must be supported through a systematic and sustained management process. Results also indicate that SMEs face greater difficulties in benefiting from the potential of innovation practices and collaboration may present opportunities to overcome their limited resources. Therefore, regardless of size, business activity, science and technology intensity or other factors influencing firms dynamic capabilities, innovation should be considered as a management imperative as it can influence not only the present but also the future of business success.

关键词： innovation management innovation process innovation routines value creation SMEs Portugal

Inter-Individual Rapid Force Improvements after Mixed Session and Traditional Periodization in Aging Adults:A Randomized Trial

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 Science in Sport and Exercise 2021年第2期3卷 125-137页

作者： Bruno Monteiro Moura Ewertton de Souza Bezerra Lucas B.R.Orssatto Antonio renato pereira Moro Fernando Diefenthaeler Universidade Federal de Santa Catarina Centro de DesportosLaboratório de BiomecânicaFlorianópolisCEP 88040-900Brazil Universidade Federal do Amazonas Faculdade de Educação Física e FisioterapiaLaboratório de Estudo do Desempenho HumanoManausCEP 38400-678Brazil School of Exercise and Nutrition Sciences Queensland University of TechnologyBrisbane 4059Australia

Background Different periodization models have been widely used to improve maximum and rapid force in aging ***,it is unclear if some specific model can influence the remarkable heterogeneity of responsiveness to rapid torque improvements following resistance *** Compare the effects of mixed session periodization(MSP)and traditional(TP)models on neuromuscular performance and individual responsiveness in aging *** Twenty-two aging men and women(64.6±5.2 years old;1.68±0.1 m;77.8±16.0 kg)completed the intervention *** were assigned into MSP(n=11)or TP(n=11)resistance training for lower *** outcome measures normalized dynamic leg press(5-RM:BM),absolute and normalized knee isometric peak torque(PT and PT:BM)and rate of torque development,and impulse were assessed at baseline and after three blocks of a 9-wk resistance training(3 sessions per week).Thigh leg lean mass was assessed by dual-energy x-ray absorptiometry at baseline and after the *** Similar increases were observed for 5-RM:BM(MSP:28.8%±13.5%and TP:26.4%±7.6%,P0.05).Absolute and normalized RTD remained unchanged throughout intervention(P>0.05),but both groups improved impulse(MSP:22.1%±25.7%and TP:12.6%±45.2%,P<0.001).Only MSP responders(n=5)presented significant time effect for absolute RTD(P<0.05)and impulse(P<0.05).Conclusion Although both periodization protocols increased 5-RM:BM and PT,it was not interchangeable through improve-ments in RTD even adopting power training ***,these results suggest a great inter-individual variability following different periodization models for aging people.

关键词： Rate of torque development Impulse Strength training Muscular strength Hypertrophy Periodization

Work Organization Model Applied on Smallholder Dairy Farms in Brazil

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 Agricultural Science and Technology(A) 2017年第8期7卷 567-576页

作者： Claudilaine Caldas de Oliveira Antonio renato pereira Moro Leandra Ulbricht Department of Production Engineering Federal University of Santa Catarina Campus Reitor Joao David Ferreira LimaFlorianopolis 88010910 Santa Catarina Brazil Graduate Program in Biomedical Engineering Federal University of Technology Curitiba 80230901 Parana Brazil

This research identified difficulties faced by dairy farmers in family farming, describing this diagnosis through ergonomic demand items （EDIs）. The objective was to elaborate an organization model of work related to dairy farming （WRDF）. As a methodology, a descriptive exploratory study was carried out in 14 family dairy farms that were visited and had their activities monitored. As main results, 11 EDIs were identified. The ones grouped in the infrastructure factor showed the highest resolution priority. The WRDF model was composed of three categories： management, public policies management and infrastructure, which were further subdivided into technical and social aspects. From this perspective, it is believed that the implementation of the model can bring organizational improvement, once adjustments are made in the procedures and working conditions. This study sheds light on the conditions that need to be resolved with higher priority so that the farmers will remain in the dairy business.

关键词： Milk production Brazil dairy farming ergonomics work environment.

A review on the synergism between corrosion and fatigue of magnesium alloys:Mechanisms and processes on the micro-scale

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 Magnesium and Alloys 2024年第8期12卷 3062-3093页

作者： Mara Cristina Lopes de Oliveira Rejane Maria pereira da Silva Ricardo M.Souto renato Altobelli Antunes Federal University of the ABC Center for EngineeringModeling and Applied Social SciencesAv.Dos Estados500109280-560 Santo AndréSPBrazil Department of Chemistry-PPGQ State University of PiauíUESPICampus Poeta Torquato NetoPirajáTeresina 64002-150 PIBrazil Institute of Material Science and Nanotechnology University of La LagunaP.O.Box 45638200 La LagunaTenerifeSpain

Understanding the interaction between cyclic stresses and corrosion of magnesium(Mg)and its alloys is increasingly in demand due to the continuous expansion of structural applications of these *** review is dedicated to exploring the corrosion-fatigue mechanisms of these materials,with an emphasis on microscale processes,and the possibility of expanding current knowledge on this topic using scanning electrochemical *** interaction between fatigue and corrosion of Mg alloys is analyzed by considering the microstructural aspects(grain size,precipitates,deformation twins),as well as the formation of ***,in the case of coated alloys,the role of coating defects in these phenomena is also *** this context,the feasibility of using scanning electrochemical microscopy(SECM),scanning vibrating electrode technique(SVET),scanning ion-selective electrode technique(SIET),localized electrochemical impedance spectroscopy(LEIS)and scanning Kelvin probe(SKP)methods to study the corrosion-fatigue interaction of Mg alloys is examined.A comprehensive review of the current literature in this field is presented,and the opportunities and limitations of consolidating the use of these techniques to study the microscale processes involved in Mg corrosion-fatigue are discussed.

关键词： Magnesium alloys Localized corrosion and protection Fatigue Scanning electrochemical microscopy Scanning vibrating electrode technique Scanning ion-selective electrode technique Scanning Kelvin probe Chemical imaging

Investigating local corrosion processes of magnesium alloys with scanning probe electrochemical techniques: A review

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2022年第11期10卷 2997-3030页

作者： Mara Cristina Lopes de Oliveira Rejane Maria pereira da Silva Ricardo M.Souto renato Altobelli Antunes Federal University of ABC Center for EngineeringModeling and Applied Social SciencesAv.Dos Estados500109210-580Santo AndréSP Brazil Instituto de Pesquisas Energéticas e Nucleares IPEN/CNENAv.Prof.Lineu Prestes2242São PauloBrazil Institute of Material Science and Nanotechnology University of La LagunaP.O.Box 456La LagunaTenerife 38200Spain

The study of corrosion of magnesium and its alloys has emerged a hot topic in the applications of lightweight structural materials. The inherently high electrochemical activity of bare magnesium surfaces still lacks a convincing mechanism to describe the observed experimental characteristics, and it has prompted the development of various types of protective coatings with the aim of slowing metal dissolution. In recent years, new instruments and techniques have been developed to study with spatial resolution the local corrosion processes that occur in metallic materials in general, and for magnesium and its alloys in particular, both for bare surfaces and coated. Scanning microelectrochemical techniques, such as local electrochemical impedance spectroscopy(LEIS), scanning electrochemical microscopy(SECM), scanning vibrating electrode technique(SVET), scanning ion-selective electrode technique(SIET) and scanning Kelvin probe(SKP) can provide information about the local electrochemical activity of metallic surfaces. In the present work, the applications of these techniques in corrosion studies of magnesium and its alloys are reviewed. Assessment of corrosion mechanisms, barrier properties of conventional coatings and active corrosion behavior of self-healing coatings are examined. Limitations and future developments in this area are discussed.

关键词： Magnesium alloys LEIS SECM SVET SIET SKP

The effect of abiotic stresses on plant C:N:P homeostasis and their mitigation by silicon

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Crop Journal 2024年第2期12卷 340-353页

作者： Milton Garcia Costa renato de Mello Prado Luiz Fabiano Palaretti Jonas pereira de Souza Júnior Department of Agricultural Production Science School of Agricultural and Veterinarian SciencesSão Paulo State UniversityJaboticabalBrazil

In crop plants, various environmental stresses affect the balance of carbon, nitrogen, and phosphorus(C:N:P), leading to biochemical and physiological alterations and reductions in yield. Silicon(Si) is a beneficial element that alleviates plant stress. Most studies involving silicon have focused on physiological responses, such as improvements in photosynthetic processes, water use efficiency, and antioxidant defense systems. But recent research suggests that stressed plants facing either limited or excessive resources(water, light, nutrients, and toxic elements), strategically employ Si to maintain C:N:P homeostasis, thereby minimizing biomass losses. Understanding the role of Si in mitigating the impact of abiotic stresses on plants by regulating C:N:P homeostasis holds great potential for advancing sustainable agricultural practices in crop production. This review presents recent advances in characterizing the influence of environmental stresses on C:N:P homeostasis, as well as the role of Si in preserving C:N:P equilibrium and attenuating biological damage associated with abiotic stress. It underscores the beneficial effects of Si in sustaining C:N:P homeostasis and increasing yield via improved nutritional efficiency and stress mitigation.

关键词： Nutritional stoichiometry Elemental stoichiometry Beneficial element Environmental stresses Nutritional efficiency Carbon use efficiency Agricultural sustainability

Asymptomatic male with grade 3 left varicocele and two children desiring vasectomy with low testosterone

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2016年第2期18卷 312-312页

作者： renato Fraietta Daniel Suslik Zylbersztejn Agnaldo pereira Cedenho Department of Surgery Division of Urology Human Reproduction Section Sao Paule Federal University Sao Paulo Hospital Rua Napeleao de Barros 715 - 2°Andar CEP: 04024-002 Sao Paulo Brazil.

When studying varicocele and infertility, substantial knowledge have been acquired in many important areas, including prevalence, etiology, and pathophysiology to the point that varicocele is considered as the main cause of primary and secondary infertility in adult men. On the other hand, offering surgical treatment of varicoceles to improve androgen levels （without a focus on improving fertile potential） is quite controversial.

关键词： @@

Can dietary flavonoids be useful in the personalized treatment of colorectal 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 2022年第6期14卷 1115-1123页

作者： Cristina pereira-Wilson Department of Biology Centre of Biological EngineeringLABBELS Associate LaboratoryUniversity of MinhoBraga 4710-057Portugal

Activating mutations in the oncogenes KRAS,BRAF and PI3K define molecular colorectal cancer(CRC)subtypes because they play key roles in promoting CRC development and in determining the efficacy of chemotherapeutic agents such as 5-fluorouracil and anti-epidermal growth factor receptor monoclonal *** of patients with cancers displaying these molecular profiles is *** the limited efficacy of therapeutic strategies for CRC presenting mutational activations in mitogen-activated protein kinase and/or PI3K pathways,developing combination therapies with natural flavonoids or other phytochemicals with demonstrated effects on these pathways(and little or no toxic effects)may constitute a valuable path *** has been published on the anticancer effects of dietary ***,even an exhaustive characterization of potential beneficial effects produced by in vitro studies cannot be extrapolated to effects in *** far,the available data constitute a good starting *** results show quercetin and curcumin as possibly the best candidates to be further explored in the context of adjuvant CRC therapy either as part of dietary prescriptions or as purified compounds in combination regimens with the drugs currently used in CRC *** trial data is still largely missing and is urgently needed to verify relevant effects and for the development of more personalized treatment approaches.

关键词： Colorectal cancer Personalized treatment Quercetin Curcumin KRAS BRAF

Developing an integrated urban ecological efficiency framework for spatial ecological planning:A case on a tropical mega metropolitan area of the global south

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geoscience Frontiers 2023年第1期14卷 298-309页

作者： Manob Das Arijit Das Paulo pereira Department of Geography University of Gour BangaMaldaWest BengalIndia Environmental Management Laboratory Mykolas Romeris University VilniusLithuania

Rapid urbanization has emerged as one of the most critical challenges to ecological sustainability in urban *** developing countries,the degradation of the ecosystem is more prominent due to the lack of urban ***,it has become urgent for researchers to identify the ecological efficiency(EE)changes imposed by urban expansion and promote sustainable land use *** study aims to develop a comprehensive urban ecological efficiency(UEE)framework in the Kolkata Metropolitan Area(KMA),India,from 2000 to *** component analysis(PCA)was used to develop a remote sensing-based UEE index(UEEI)based on five effective ecological parameters(Greenness,Dryness,Heat,Wetness and vegetation health.A single sensitivity parameter was also calculated to determine the role of a single parameter based on which management strategies can be carried *** findings showed that(i)there were substantial deteriorations of UEE in the last 20 *** 2000 the areas with good EE were about 65.5%which declined to 53.72%in 2010 and 20.87%in *** areas with good UEE decreased 68%and 61%from 2000 to 2020 and 2010 to 2020,respectively;(ii)the areas with good UEE were 52%in 2000,while 38%in *** urban centres(Bhadreshwar,Champdani,Srirampur,Bally,Howrah,Kamarhati,Baranagar,Dum Dum,South Dum Dum,Rajarhat,Bidhannagar)located around the Kolkata megacity are characterized by poor and very poor EE(ranges of 0.60-1.00).Thus,spatiotemporal pattern of UEE could assist to clarify the administrative responsibilities as well as *** addition to this,the UEE framework can help for scientific guidance of urban ecosystem protection and restoration through comprehensive spatial landscape planning.

关键词： Urban ecological efficiency Kolkata metropolitan area Ecosystem services Urban ecological management Urbanization