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TinyML-Based Fall Detection for Connected Personal Mobility Vehicles

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Computers, Materials & Continua 2022年第5期71卷 3869-3885页

作者： Ramon Sanchez-Iborra Luis Bernal-Escobedo jose santa Antonio Skarmeta University Center of Defense General Air Force AcademySan Javier30720Spain University of Murcia Murcia30100Spain Technical University of Cartagena Cartagena30202Spain

A new wave of electric vehicles for personal mobility is currently crowding public *** offer a sustainable and efficient way of getting around in urban environments,however,these devices bring additional safety issues,including serious accidents for ***,taking advantage of a connected personal mobility vehicle,we present a novel on-device Machine Learning(ML)-based fall detection system that analyzes data captured from a range of sensors integrated on an on-board unit(OBU)*** the typical processing limitations of these elements,we exploit the potential of the TinyML paradigm,which enables embedding powerful ML algorithms in constrained *** have generated and publicly released a large dataset,including real riding measurements and realistically simulated falling events,which has been employed to produce different TinyML *** attained results show the good operation of the system to detect falls efficiently using embedded *** considered algorithms have been successfully tested on mass-market low-power units,implying reduced energy consumption,flash footprints and running times,enabling new possibilities for this kind of vehicles.

关键词： Personal mobility machine learning on-board unit C-ITS IoT

Occlusion with a Vascular Plug of a Congenital Circumflex Coronary Artery—Right Ventricle Fistula with Coronary Steal Phenomenon

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World Journal of Cardiovascular Diseases 2024年第11期14卷 689-694页

作者： Gilberto H. Acosta-Gutiérrez Camila Ponce-Acosta Roberto Cano-Zarate Maria jose santa-Ana-Bayona jose A. Garcia-Montes Nilda Espinola-Zavaleta Nuclear Cardiology Department National Institute of Cardiology Ignacio Chavez Mexico City Mexico Mexican Faculty of Medicine La Salle University Mexico City Mexico Magnetic Resonance Department National Institute of Cardiology Ignacio Chavez Mexico City Mexico Pediatric Interventional Cardiology Department National Institute of Cardiology Ignacio Chavez Mexico City Mexico

Background: Coronary fistulas are abnormal communications with a worldwide prevalence of 0.002% in the general population. Aim: The aim of this study is to present a case of a congenital coronary artery fistula presented with coronary steal and describe this phenomenon. Methods: A systematic search was conducted to explore the relationship between the coronary steal phenomenon and coronary artery diseases using the PubMed database. Case Presentation: A seven-month-old female patient, was admitted to the hospital presenting diaphoresis on feeding and failure to thrive. Physical examination denotes continuous murmur in the fourth intercostal space left parasternal border (IV/VI) crescendo-decrescendo, wide and permanent unfolding of S2 (S1-A2-P2). An echocardiogram shows enlargement of right cavities, dilatation of the left coronary artery, circumflex artery connected to the right ventricle, and pulmonary artery systolic pressure of 45 mmHg. Tomography angiography demonstrated dilatation of the circumflex artery and a tortuous trajectory towards the posterior wall of the right ventricle, suggesting a coronary fistula. Results: The findings were corroborated by catheterization and a vascular plug (Amplatzer AVP II) was successfully placed. During follow-up complete obliteration was observed, with adequate weight gain and no associated symptoms. Conclusion: This case illustrates a distinctive clinical manifestation of congenital coronary artery fistula associated with the coronary steal phenomenon, establishing a new paradigm for the early diagnosis and management of this condition in the pediatric population.

关键词： Coronary Artery Disease Coronary Vessel Anomalies Embolization Therapeutics

Soil properties characterization for land-use planning and soil management in watersheds under family farming

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International Soil and Water Conservation Research 2022年第1期10卷 119-128页

作者： jose Miguel Reichert Paulo Ivonir Gubiani Danilo Rheinheimer dos Santos Dalvan jose Reinert Celso Aita Sandro jose Giacomini Soils Department Universidade Federal de Santa Maria(UFSM)Santa MariaRSBrazil

Environmental monitoring of small,rural watersheds was one of the components of the Natural Re-sources Management and Rural Poverty Alleviation Program(RS-Rural)in southern *** purpose of the monitoring was to assess the impact of promoting soil conservation and environment manage-ment practices adopted by farmers and funded by the *** four small monitored watersheds,in a total of 95 plots representing distinct land use and soil management,surface soil was collected to characterize ground-zero of the Program by determining several soil physical,chemical and microbio-logical *** component analysis(PCA)shows soil physical,chemical and biological properties were decisive in defining the agricultural soils in the rural watersheds with family *** sensitivity to chemical properties provides an opportunity to improve soil quality if soil management focuses on altering those *** management practiced by tobacco farmers leads to rapid,intense degradation of some natural soil properties,especially those related to the dynamics of soil organic matter,compared with more conservationist uses(forest,regrowth,and grassland).Thus,soil management must be reoriented to avoid the progress of degradation and recover soil physical and biological *** crops and by land-abandonment to allow natural vegetation are important management strategies for the degraded soils used for tobacco production,increasing soil organic matter,nutrients and microbial activity and thus allowing further crop *** conclusion,wa-tersheds with tobacco cropping have soils with lower quality than when under no-tillage grain pro-duction,requiring changes in land use and soil management.

关键词： Natural resources management Environmental monitoring Soil conservation Soil quality Alleviating poverty

Isotopic niche provides an insight into the ecology of a symbiont during its geographic expansion

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Current Zoology 2022年第2期68卷 185-197页

作者： Enrique GONZALEZ-ORTEGON Marta PEREZ-MIGUEL jose I.NAVAS Pilar DRAKE jose A.CUESTA Instituto de Ciencias Marinas de Andalucia(ICMAN-CSIC) Campus Universitario Rio San PedroAvda.Republica Saharaui211519CadizPuerto RealSpain Unidad Asociada Crecimiento Azul CSIC-IFAPA El Puerto de Santa Maria SpainSpain Instituto de Investigacion y Formacion Agraria y Pesquera IFAPA-Centro Agua del PinoCtra.EI Rompido-Punta Umbriakm 3.821459 EI RompidoHuelvaSpain

The study of the recent colonization of a symbiont and its interaction with host communities in new locations is an opportunity to understand how they *** use of isotopic ratios in trophic ecology can provide measurements of a species'isotopic niche,as well as knowledge about how the isotopic niches between symbiont and host species *** isotope measurements were used to assess the sources of carbon assimilated by the host species(the bivalves Mytilus galloprovincialis and Scrobicularia plana)and their associated symbiont pea crab Afropinnotheres monodi,which occurs within these bivalves'mantle *** mixing model estimates suggest that all of them assimilate carbon from similar sources,particularly from pseudofaeces and particulate organic matter in this symbiotic system based on filter *** symbiotic species occupy comparable trophic levels and its association seems to be commensal or parasitic depending on the duration of such *** pea crab *** reflects a sex-specific diet,where males are more generalist than the soft females because the latter's habitat is restricted to the host *** high isotopic overlap between soft females and *** may reflect a good commensal relationship with the host.

关键词： bivalves commensal kleptoparasitism parasitism stable isotope trophic position

An elastin-like recombinamer-based bioactive hydrogel embedded with mesenchymal stromal cells as an injectable scaffold for osteochondral repair

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Regenerative Biomaterials 2019年第6期6卷 335-347页

作者： Filippo Cipriani Blanca Arino Palao Israel Gonzalez de Torre Aurelio Vega Castrillo Hector jose Aguado Hernandez Matilde Alonso Rodrigo Angel jose Alvarez Barcia Ana Sanchez Veronica Garcıa Diaz Monica Lopez Pena jose Carlos Rodriguez-Cabello Technical Proteins Nanobiotechnology S.L. Paseo Belen 9AValladolid 47011Spain Departamento de traumatologıa Hospital Clınico de ValladolidAv.Ramon y Cajal 3Valladolid 47003Spain Bioforge University of Valladolid CIBER-BBNPaseo de Belen 19Valladolid 47011Spain SIBA-UVA:servicio investigacion y bienestar animal University of ValladolidC/Plaza de Santa Cruz 8Valladolid 47002Spain Instituto de Biologıa y Genetica Molecular(IBGM) Universidad de Valladolid y CSICCalle Sanz y Fores 3Valladolid 47003Spain Facultad de veterinaria Campus UniversitarioAvda.Carballo Calero s/nLugo 27002Spain

The aim of this study was to evaluate injectable,in situ cross-linkable elastin-like recombinamers(ELRs)for osteochondral *** the ELR-based hydrogel alone and the ELR-based hydrogel embedded with rabbit mesenchymal stromal cells(rMSCs)were tested for the regeneration of critical subchondral defects in 10 New Zealand ***,cylindrical osteochondral defects were filled with an aqueous solution of ELRs and the animals sacrificed at 4months for histological and gross evaluation of features of biomaterial performance,including integration,cellular infiltration,surrounding matrix quality and the new matrix in the *** both approaches helped cartilage regeneration,the results suggest that the specific composition of the rMSC-containing hydrogel permitted adequate bone regeneration,whereas the ELR-based hydrogel alone led to an excellent regeneration of hyaline *** conclusion,the ELR cross-linker solution can be easily delivered and forms a stable well-integrated hydrogel that supports infiltration and de novo matrix synthesis.

关键词： biopolymer animal test cartilage bone

Diagnosis and treatment of iron-deficiency anemia in gastrointestinal bleeding:A systematic review

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World Journal of Gastroenterology 2020年第45期26卷 7242-7257页

作者： jose Cotter Cilenia Baldaia Manuela Ferreira Guilherme Macedo Isabel Pedroto Department of Gastroenterology Hospital da Senhora da Oliveira-GuimarãesGuimarães 4835-044Portugal Department of Life and Health Sciences Research Institute(ICVS) School of MedicineUniversity of MinhoBraga 4710-057Portugal Department of Life and Health Sciences Research Institute(ICVS)/3B’s PT Government Associate LaboratoryBraga 4710-057Portugal Department of Gastroenterology Hospital de Santa MariaCentro Hospitalar Lisboa NorteLisbon 1649-035Portugal Department of University Clinic of Medicine II Faculty of MedicineUniversity of LisbonLisbon 1649-028Portugal Department of Gastroenterology Centro Hospitalar e Universitário de CoimbraCoimbra 3000-075Portugal Department of Faculty of Medicine University of CoimbraCoimbra 3004-504Portugal Department of Gastroenterology Centro Hospitalar de São JoãoPorto 4200-319Portugal Department of Gastroenterology Faculty of MedicineUniversity of PortoPorto 4200-319Portugal Department of Gastroenterology and Hepatology Training Center World Gastroenterology OrganizationPorto 4200-319Portugal Department of Gastroenterology Centro Hospitalar do PortoPorto 4099-001Portugal Department of Institute of Biomedical Sciences Abel Salazar University of PortoPorto 4050-313Portugal

BACKGROUND Anemia is considered a public health issue and is often caused by iron ***-deficiency anemia(IDA)often originates from blood loss from lesions in the gastrointestinal tract in men and postmenopausal women,and its prevalence among patients with gastrointestinal bleeding has been estimated to be 61%.However,few guidelines regarding the appropriate investigation of patients with IDA due to gastrointestinal bleeding have been *** To review current evidence and guidelines concerning IDA management in gastrointestinal bleeding patients to develop recommendations for its diagnosis and *** Five gastroenterology experts formed the Digestive Bleeding and Anemia Workgroup and conducted a systematic literature search in PubMed and professional association ***(via PubMed)searches combined medical subject headings(MeSH)terms and the keywords“gastrointestinal bleeding”with“iron-deficiency anemia”and“diagnosis”or“treatment”or“management”or“prognosis”or“prevalence”or“safety”or“iron”or“transfusion”or“quality of life”,or other terms to identify relevant articles reporting the management of IDA in patients over the age of 18 years with gastrointestinal bleeding;retrieved studies were published in English between January 2003 and April *** professional association websites were searched for clinical practice *** lists from guidelines were reviewed to identify additional relevant *** recommendations were developed by consensus during two meetings and were supported by the published literature identified during the systematic *** From 494 Literature citations found during the initial literature search,17 original articles,one meta-analysis,and 13 clinical practice guidelines were *** on the published evidence and clinical experience,the workgroup developed the following ten recommendations for the management of IDA in patients with gastrointestinal bleeding:(1)Evaluation of

关键词： Anemia iron-deficiency Erythrocyte transfusion Ferric carboxymaltose Gastrointestinal hemorrhage Iron Practice guidelines as topic

Role of coatings and materials of external fixation pins on the rates of pin tract infection:A systematic review and meta-analysis

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World Journal of Orthopedics 2021年第11期12卷 920-930页

作者： Cristhopher Stoffel Bruno Eltz Mauro jose Salles Department of Orthopedic Surgery Instituto de Ortopedia e Traumatologia do Rio Grande do SulPasso Fundo 99010110Rio Grande do SulBrazil Department of Orthopedic Surgery Hospital São FranciscoConcordia 89700-000Santa CatarinaBrazil Musculoskeletal Infection Group Internal Medicine DepartmentSanta Casa de Sao Paulo School of Medical SciencesSao Paulo 01221-020Brazil Musculoskeletal Infection Group Division of Infectious DiseasesEscola Paulista de MedicinaUniversidade Federal de Sao PauloSao Paulo 01221-020Brazil

BACKGROUND Infection at the pin tract is a frequent and feared complication of external fixators(EF).The type of pin material and coatings have been regarded as possibly influencing infection *** the last 20 years,few prospective clinical studies and systematic reviews addressed the role of coated pins on the rate of pin site infection in human clinical *** To assess the EF literature over the past 20 years on the clinical benefits of pins manufactured from varied materials and coating systems and their possible role in pin tract infection *** We performed a systematic review according to the PRISMA and PICOS guidelines using four scientific platforms:PubMed,LiLacs,SciELO,and *** searched the literature for related publications over the past 20 *** A literature search yielded 29 articles,among which seven met the inclusion *** studies compared stainless-steel pins and pins coated with hydroxyapatite(HA),titanium and *** pin tract infection definitions were arbitrary and not standardized among *** studies included a low number of patients in the analysis and used a short follow-up *** metaanalyses were carried out,comparing stainless steel vs silver pins,stainless steel vs HA-coated pins,and titanium vs HA-coated *** of this analysis resulted in statistically significant differences in pin tract infection *** Currently,no clinical evidence supports the advantage of EF pins manufactured with materials other than stainless steel or coated over uncoated pins in reducing the rates of pin tract infections.A standardized definition of pin tract infection in external fixation is still lacking.

关键词： External fixator Pin tract infection Stainless steel pin Coated pin Coating systems Pin site infection

Gastrointestinal manifestations of systemic sclerosis:An updated review

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World Journal of Clinical Cases 2021年第22期9卷 6201-6217页

作者： Adan Luquez-Mindiola Alexis Javier Atuesta Andres jose Gómez-Aldana Department of Gastroenterology Gut MédicaBogota 11711 Colombia Department of Internal Medicine Universidad Nacional de ColombiaBogota 11711Colombia Department of Endoscopy Santa Fe Foundation of Bogotá(Fundación Santa Fe de Bogotá)Bogotá11711Colombia Faculty of Medicine Universidad de los AndesBogota 11711Colombia

Systemic sclerosis is an autoimmune disease characterized by vascular disease,fibrosis of the skin,and internal organ *** involvement is the most frequent complication of internal organs,impacting up to 90%of *** involvement can affect any region of the gastrointestinal tract from the mouth to the anus,with a predominance of disorders being observed at the level of the upper digestive *** gastrointestinal involvement primarily involves the esophagus,small bowel,and *** severity of gastrointestinal involvement affects quality of life and is a marker of worse prognosis and mortality in these *** this review,we describe the current findings regarding gastrointestinal involvement by this entity.

关键词： Systemic sclerosis Gastrointestinal Diagnosis Treatment

Tribological behaviour of sintered iron based self-lubricating composites

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Friction 2017年第3期5卷 285-307页

作者： jose Daniel Biasoli DE MELLO Cristiano BINDER Gisele HAMMES Roberto BINDER Aloisio Nelmo KLEIN Laboratorio de Materiais(LabMat) Universidade Federal de Santa Catarina Florianópolis 88.040-900 SC BrazilLaboratorio de Tribologia e Materiais Universidade Federal de Uberl(a)ndia Uberl(a)ndia 38.400-902 MG Brazil Laboratorio de Materiais(LabMat) Universidade Federal de Santa Catarina Florianópolis 88.040-900 SC Brazil Whirlpool Embraco Unit Joinville 89.219-900 SC Brazil

This work is a review of previous works,presenting and discussing the most important results obtained by an ongoing research program towards the development of innovative,low-cost,self-lubricating composites with a low friction coefficient and high mechanical strength and wear *** emphasis is given to uniaxial die pressing of solid lubricant particles mixed with matrix powders and to metal injection moulding associated with in situ generation of solid lubricant ***,a microstructural model/processing route (powder injection moulding followed by plasma-assisted debinding and sintering) produced a homogeneous dispersion of in situ generated solid lubricant *** nodules of graphite with diameter smaller than 20 μm were formed,constituting a nanostructured stacking of graphite foils with nanometric *** Raman analysis indicated that the graphite nodules were composed of turbostratic 2D graphite having highly misaligned graphene planes separated by large interlamellae *** interplanar distance between the graphene foils and misalignment of these foils were confirmed by transmission electron microscopy and were,probably,the origin of the outstandingly low dry friction coefficient (0.04).The effect of sintering temperature,precursor content,metallic matrix composition and surface finish is also ***,the influence of a double-pressing/double-sintering (DPDS) technique on the tribological performance of self-lubricating uniaxially die-pressed hBN + graphite-Fe-Si-C-Mo composite is also ***,the tribological behaviour of die-pressed Fe-Si-C matrix composites containing 5,7.5 and 10 wt％ solid lubricants (hBN and graphite) added during the mixing step is analysed in terms of mechanical properties and wear ***,the synergy between solid lubricant particles dispersed in a metallic matrix and fluid lubricants in a cooperative mixed lubrication regime is presented.

关键词： tribological behaviour powder metallurgy iron based self-lubricating composites turbostratic graphite