323 research outputs found
Non-Invasive Real-Time Diagnosis of PMSM Faults Implemented in Motor Control Software for Mission Critical Applications
This paper presents a non-intrusive, real-time, online Condition Monitoring and FaultDiagnosis system for Permanent Magnet Synchronous Machines. The system utilizesonly the motor drive's built-in sensors, such as current and voltage sensors, to detectthree types of faults: inter-turn short circuit, partial demagnetization, and staticeccentricity. The proposed solution adopts a hardware-free approach, utilizingcurrent/voltage signature analysis to optimize cost-effectiveness. It requires a smallmemory and short execution time, allowing it to be implemented on a simple motorcontroller with limited memory and calculation power. The system is designed forcritical mission applications, and therefore, computation load, code size, memoryallocation, and run-time optimization are key focuses for real-time operation. Theproposed method has a high detection accuracy of 98%, is computationally efficient,and can accurately detect and classify the fault. The system provides immediateinsights into motor health without interrupting the drive operation
Autonomous fault detection and diagnosis for permanent magnet synchronous motors using combined variational mode decomposition, the Hilbert-Huang transform, and a convolutional neural network
Entropy Analysis in Pipe Flow Subjected to External Heating
Abstract: In the present study, heat transfer and entropy analysis for flow through a pipe system is considered. The Reynolds number and the pipe wall temperature effects on entropy distribution and total entropy generation in the pipe are investigated. Numerical scheme employing a control volume approach is introduced when solving the governing equations. Steel is selected as pipe material, while water is used as fluid. It is found that increasing pipe wall temperature and Reynolds number increases the entropy production rate, in which case, entropy generation due to heat transfer dominates over that corresponding to fluid friction
Detection of enteric parasites and molecular characterization of Giardia duodenalis and Blastocystis sp. in patients admitted to hospital in Ankara, Turkey.
This epidemiological study assesses the occurrence of enteric parasites in 4303 patients attended at two public hospitals in Ankara (Turkey) during 2018-2019. Microscopy was used as a screening test. Giardia duodenalis was also identified using a commercial ELISA for the detection of parasite-specific coproantigens. Giardia-positive samples by microscopy/ELISA were confirmed by real-time PCR and characterized using a multilocus genotyping scheme. Blastocystis sp. was genotyped in a sample subset. Blastocystis sp. (11.1%, 95% CI 11.4ā14.8%) and G. duodenalis (1.56%, 95% CI 1.22ā1.96) were the most prevalent pathogens found. Cryptosporidium spp., Entamoeba histolytica and intestinal helminths were only sporadically (<0.5%) found. For G. duodenalis, sequence (n = 30) analyses revealed the presence of sub-assemblages AII (23.3%), discordant AII/AIII (23.3%) and mixed AII + AIII (6.7%) within assemblage A, and BIII (10.0%), BIV (3.3%) and discordant BIII/BIV (23.3%) within assemblage B. Two additional sequences (6.7%) were assigned to the latter assemblage but sub-assemblage information was unknown. No associations between G. duodenalis assemblages/sub-assemblages and sociodemographic and clinical variables could be demonstrated. For Blastocystis sp., sequence (n = 6) analyses identified subtypes ST1, ST2 and ST3 at equal proportions. This is the first molecular characterization of G. duodenalis based on MLG conducted in Turkey to date.This research was partially funded by the Scientific Research Unit of Gazi University (Ankara, Turkey) under project number 01/2017-15, and by the Health Institute Carlos III (ISCIII), Ministry of Science, Innovation and Universities (Spain) under grant number PI16CIII/00024N
Energy intensity and environmental impact metrics of the back-end separation of ethylene plant by thermodynamic analysis
Blastocystis: A mysterious member of the gut microbiome
Blastocystis is the most common gastrointestinal protist found in humans and animals. Although the clinical significance of Blastocystis remains unclear, the organism is increasingly being viewed as a commensal member of the gut microbiome. However, its impact on the microbiome is still being debated. It is unclear whether Blastocystis promotes a healthy gut and microbiome directly or whether it is more likely to colonize and persist in a healthy gut environment. In healthy people, Blastocystis is frequently associated with increased bacterial diversity and significant differences in the gut microbiome. Based on current knowledge, it is not possible to determine whether differences in the gut microbiome are the cause or result of Blastocystis colonization. Although it is possible that some aspects of this eukaryoteās role in the intestinal microbiome remain unknown and that its effects vary, possibly due to subtype and intra-subtype variations and immune modulation, more research is needed to characterize these mechanisms in greater detail. This review covers recent findings on the effects of Blastocystis in the gut microbiome and immune modulation, its impact on the microbiome in autoimmune diseases, whether Blastocystis has a role like bacteria in the gutābrain axis, and its relationship with probiotics
Effect of a Fatty Acid Additive on the Kinetic Friction and Stiction of Confined Liquid Lubricants
Apresentamos neste texto parte das produƧƵes de pesquisa que acompanhou a construĆ§Ć£o de corpos inseridos num Centro de AtenĆ§Ć£o Psicossocial para Ćlcool e outras Drogas, em cidade do nordeste brasileiro, focando de modo mais acentuado em arranjos de masculinidades. Especial atenĆ§Ć£o Ć© dada Ć tensĆ£o entre normalizaĆ§Ć£o de corpos e tentativas de (re)existĆŖncias. A argumentaĆ§Ć£o se desenvolve no campo da saĆŗde pĆŗblica, em particular o da saĆŗde mental, e alicerƧada nos estudos de gĆŖnero e sexualidade. A produĆ§Ć£o de dados se valeu de observaƧƵes registradas em diĆ”rio de campo, acompanhamento itinerante, composiĆ§Ć£o de um coletivo de pesquisa, entrevistas, grupos focais em que, dentre outras coisas, se discutia trechos de diĆ”rios de campo, rodas de conversa e oficinas com profissionais e usuĆ”ri*s. A aposta metodolĆ³gica foi a de forjar um modo de narrar coletivo que agenciasse experimentaĆ§Ć£o e desaprendizagens corporais, junto a modos de produzir cuidado em saĆŗde e de fazer pesquisa.Apresentamos neste texto parte das produƧƵes de pesquisa que acompanhou a construĆ§Ć£o de corpos inseridos num Centro de AtenĆ§Ć£o Psicossocial para Ćlcool e outras Drogas, em cidade do nordeste brasileiro, focando de modo mais acentuado em arranjos de masculinidades. Especial atenĆ§Ć£o Ć© dada Ć tensĆ£o entre normalizaĆ§Ć£o de corpos e tentativas de (re)existĆŖncias. A argumentaĆ§Ć£o se desenvolve no campo da saĆŗde pĆŗblica, em particular o da saĆŗde mental, e alicerƧada nos estudos de gĆŖnero e sexualidade. A produĆ§Ć£o de dados se valeu de observaƧƵes registradas em diĆ”rio de campo, acompanhamento itinerante, composiĆ§Ć£o de um coletivo de pesquisa, entrevistas, grupos focais em que, dentre outras coisas, se discutia trechos de diĆ”rios de campo, rodas de conversa e oficinas com profissionais e usuĆ”ri*s. A aposta metodolĆ³gica foi a de forjar um modo de narrar coletivo que agenciasse experimentaĆ§Ć£o e desaprendizagens corporais, junto a modos de produzir cuidado em saĆŗde e de fazer pesquisa.Apresentamos neste texto parte das produƧƵes de pesquisa que acompanhou a construĆ§Ć£o de corpos inseridos num Centro de AtenĆ§Ć£o Psicossocial para Ćlcool e outras Drogas, em cidade do nordeste brasileiro, focando de modo mais acentuado em arranjos de masculinidades. Especial atenĆ§Ć£o Ć© dada Ć tensĆ£o entre normalizaĆ§Ć£o de corpos e tentativas de (re)existĆŖncias. A argumentaĆ§Ć£o se desenvolve no campo da saĆŗde pĆŗblica, em particular o da saĆŗde mental, e alicerƧada nos estudos de gĆŖnero e sexualidade. A produĆ§Ć£o de dados se valeu de observaƧƵes registradas em diĆ”rio de campo, acompanhamento itinerante, composiĆ§Ć£o de um coletivo de pesquisa, entrevistas, grupos focais em que, dentre outras coisas, se discutia trechos de diĆ”rios de campo, rodas de conversa e oficinas com profissionais e usuĆ”ri*s. A aposta metodolĆ³gica foi a de forjar um modo de narrar coletivo que agenciasse experimentaĆ§Ć£o e desaprendizagens corporais, junto a modos de produzir cuidado em saĆŗde e de fazer pesquisa.Apresentamos neste texto parte das produƧƵes de pesquisa que acompanhou a construĆ§Ć£o de corpos inseridos num Centro de AtenĆ§Ć£o Psicossocial para Ćlcool e outras Drogas, em cidade do nordeste brasileiro, focando de modo mais acentuado em arranjos de masculinidades. Especial atenĆ§Ć£o Ć© dada Ć tensĆ£o entre normalizaĆ§Ć£o de corpos e tentativas de (re)existĆŖncias. A argumentaĆ§Ć£o se desenvolve no campo da saĆŗde pĆŗblica, em particular o da saĆŗde mental, e alicerƧada nos estudos de gĆŖnero e sexualidade. A produĆ§Ć£o de dados se valeu de observaƧƵes registradas em diĆ”rio de campo, acompanhamento itinerante, composiĆ§Ć£o de um coletivo de pesquisa, entrevistas, grupos focais em que, dentre outras coisas, se discutia trechos de diĆ”rios de campo, rodas de conversa e oficinas com profissionais e usuĆ”ri*s. A aposta metodolĆ³gica foi a de forjar um modo de narrar coletivo que agenciasse experimentaĆ§Ć£o e desaprendizagens corporais, junto a modos de produzir cuidado em saĆŗde e de fazer pesquisa.Apresentamos neste texto parte das produƧƵes de pesquisa que acompanhou a construĆ§Ć£o de corpos inseridos num Centro de AtenĆ§Ć£o Psicossocial para Ćlcool e outras Drogas, em cidade do nordeste brasileiro, focando de modo mais acentuado em arranjos de masculinidades. Especial atenĆ§Ć£o Ć© dada Ć tensĆ£o entre normalizaĆ§Ć£o de corpos e tentativas de (re)existĆŖncias. A argumentaĆ§Ć£o se desenvolve no campo da saĆŗde pĆŗblica, em particular o da saĆŗde mental, e alicerƧada nos estudos de gĆŖnero e sexualidade. A produĆ§Ć£o de dados se valeu de observaƧƵes registradas em diĆ”rio de campo, acompanhamento itinerante, composiĆ§Ć£o de um coletivo de pesquisa, entrevistas, grupos focais em que, dentre outras coisas, se discutia trechos de diĆ”rios de campo, rodas de conversa e oficinas com profissionais e usuĆ”ri*s. A aposta metodolĆ³gica foi a de forjar um modo de narrar coletivo que agenciasse experimentaĆ§Ć£o e desaprendizagens corporais, junto a modos de produzir cuidado em saĆŗde e de fazer pesquisa.Apresentamos neste texto parte das produƧƵes de pesquisa que acompanhou a construĆ§Ć£o de corpos inseridos num Centro de AtenĆ§Ć£o Psicossocial para Ćlcool e outras Drogas, em cidade do nordeste brasileiro, focando de modo mais acentuado em arranjos de masculinidades. Especial atenĆ§Ć£o Ć© dada Ć tensĆ£o entre normalizaĆ§Ć£o de corpos e tentativas de (re)existĆŖncias. A argumentaĆ§Ć£o se desenvolve no campo da saĆŗde pĆŗblica, em particular o da saĆŗde mental, e alicerƧada nos estudos de gĆŖnero e sexualidade. A produĆ§Ć£o de dados se valeu de observaƧƵes registradas em diĆ”rio de campo, acompanhamento itinerante, composiĆ§Ć£o de um coletivo de pesquisa, entrevistas, grupos focais em que, dentre outras coisas, se discutia trechos de diĆ”rios de campo, rodas de conversa e oficinas com profissionais e usuĆ”ri*s. A aposta metodolĆ³gica foi a de forjar um modo de narrar coletivo que agenciasse experimentaĆ§Ć£o e desaprendizagens corporais, junto a modos de produzir cuidado em saĆŗde e de fazer pesquisa.The paper presents part of the research productions that accompanied the construction of bodies inserted in a Psychosocial Care Center for Alcohol and Other Drugs (CAPS-AD) of a city in the northern region of Brasil, focusing more sharply on masculinities arrangements. Special attention is given to the tension between normalized bodies and attempts at resistance and (re) exist. The argument is in the field of public health, particularly mental health, and rooted in gender and sexuality studies. The data production methodology made use of observations recorded in a diary, itinerant follow-up of a collective of research, interviews, focus groups where, among other things, was discussed diary topics, conversation circles and workshops. The attempt was to produce a way of collective narrating strategy, combining up experience and body (un)learn well as ways of producing health care and doing research
Applying Factor Analysis Combined with Kriging and Information Entropy Theory for Mapping and Evaluating the Stability of Groundwater Quality Variation in Taiwan
In Taiwan many factors, whether geological parent materials, human activities, and climate change, can affect the groundwater quality and its stability. This work combines factor analysis and kriging with information entropy theory to interpret the stability of groundwater quality variation in Taiwan between 2005 and 2007. Groundwater quality demonstrated apparent differences between the northern and southern areas of Taiwan when divided by the Wu River. Approximately 52% of the monitoring wells in southern Taiwan suffered from progressing seawater intrusion, causing unstable groundwater quality. Industrial and livestock wastewaters also polluted 59.6% of the monitoring wells, resulting in elevated EC and TOC concentrations in the groundwater. In northern Taiwan, domestic wastewaters polluted city groundwater, resulting in higher NH3-N concentration and groundwater quality instability was apparent among 10.3% of the monitoring wells. The method proposed in this study for analyzing groundwater quality inspects common stability factors, identifies potential areas influenced by common factors, and assists in elevating and reinforcing information in support of an overall groundwater management strategy
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