2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG)最新文献_第6页

A microfluidic device for size-based microplastics and microalgae separation 一种基于尺寸的微塑料与微藻分离的微流控装置

2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG) Pub Date : 2023-06-22 DOI: 10.1109/ENBENG58165.2023.10175366

V. H. Magalhães, V. Pinto, P. Sousa, L. Gonçalves, Emilio Fernández, G. Minas

{"title":"A microfluidic device for size-based microplastics and microalgae separation","authors":"V. H. Magalhães, V. Pinto, P. Sousa, L. Gonçalves, Emilio Fernández, G. Minas","doi":"10.1109/ENBENG58165.2023.10175366","DOIUrl":"https://doi.org/10.1109/ENBENG58165.2023.10175366","url":null,"abstract":"Phytoplankton are microscopic marine algae that constitute the foundation of the aquatic food web. They are essential to drive life in the oceans but can also be harmful in the form of algae blooms, either by producing phytoplankton toxins or massive biomass proliferation. Microalgae cell size is a relevant morphologic trait that can help identifying species responsible for these blooms at early stages. Sorting microalgae based on cell size reduces the complexity of the sea water samples, making identification easier, and allows enrichment of the target size. This work reports the study and optimization of an inertial microfluidic device for size-based separation and concentration of microparticles/microalgae. It is demonstrated the suitability of the device for sorting and separation of microparticles/microalgae of varying sizes. Furthermore, the enrichment of microalgae was also demonstrated, achieving a 2.5-fold increase fluorescence detection with only one spiral passage. This method is well suited for integration in monitoring devices due to its easy fabrication and integration in miniaturized systems and has potential as a pre-sorting and enrichment step prior to analysis. In addition, it can be used to improve the monitoring performance of early harmful algal blooms, or detection of microplastics in the water.","PeriodicalId":125330,"journal":{"name":"2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130198630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laboratory biomarkers associated to death in the first three COVID-19 waves in Portugal 与葡萄牙前三波COVID-19死亡相关的实验室生物标志物

2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG) Pub Date : 2023-06-22 DOI: 10.1109/ENBENG58165.2023.10175345

Cristiana P Von Rekowski, Rúben Araújo, Tiago A H Fonseca, C. Calado, Luís Bento, I. Pinto

{"title":"Laboratory biomarkers associated to death in the first three COVID-19 waves in Portugal","authors":"Cristiana P Von Rekowski, Rúben Araújo, Tiago A H Fonseca, C. Calado, Luís Bento, I. Pinto","doi":"10.1109/ENBENG58165.2023.10175345","DOIUrl":"https://doi.org/10.1109/ENBENG58165.2023.10175345","url":null,"abstract":"Besides the pandemic being over, new SARS-CoV-2 lineages, and sub-lineages, still pose risks to global health. Thus, in this preliminary study, to better understand the characteristics of COVID-19 patients and the effect of certain hematologic biomarkers on their outcome, we analyzed data from 337 patients admitted to the ICU of a single-center hospital in Lisbon, Portugal, in the first three waves of the pandemic. Most patients belonged to the second (40.4%) and third (41.2%) waves. The ones from the first wave were significantly older and relied more on respiratory techniques like invasive mechanic ventilation and extracorporeal membrane oxygenation. There were no significant differences between waves regarding mortality in the ICU. In general, non-survivors had worse laboratory results. Biomarkers significantly associated with death changed depending on the waves. Increased high-sensitivity cardiac troponin I results, and lower eosinophil counts were associated to death in all waves. In the second and third waves, the international normalized ratio, lymphocyte counts, and neutrophil counts were also associated to mortality. A higher risk of death was linked to increased myoglobin results in the first two waves, as well as increased creatine kinase results, and lower platelet counts in the third wave.","PeriodicalId":125330,"journal":{"name":"2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126447900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Asymmetry Measures of Dermoscopic Images for Automated Melanoma Detection 用于黑色素瘤自动检测的皮肤镜图像不对称测量

2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG) Pub Date : 2023-06-22 DOI: 10.1109/ENBENG58165.2023.10175337

Keith Lancaster, G. Zouridakis

{"title":"Asymmetry Measures of Dermoscopic Images for Automated Melanoma Detection","authors":"Keith Lancaster, G. Zouridakis","doi":"10.1109/ENBENG58165.2023.10175337","DOIUrl":"https://doi.org/10.1109/ENBENG58165.2023.10175337","url":null,"abstract":"Melanoma is the deadliest form of skin cancer and early detection is critical for successful treatment. Dermoscopy is an effective tool for assessing the likelihood of a suspicious lesion being malignant. In this study, we focus on improving the detection of lesion asymmetry, one of the key factors of automated melanoma recognition. We employ two approaches: irregularity of the lesion contour assessed with measures that compare lesion quadrants with respect to area, color, and melanin content, and size theory using one-dimensional measuring functions to determine asymmetry. Measuring functions were mapped into size functions and compared using bottleneck distances, which were then used as classification features. Annotated dermoscopic images were used to train and assess classifiers for both methods. Our results show that the combined methods exhibit 95% lesion classification accuracy and suggest that size functions may be suitable for detecting melanoma directly. Our findings confirm that smartphone-based systems can be valuable assistive devices with substantial benefits for both individual healthcare and public health outcomes. This technology has the potential to enhance patient accessibility, particularly in low-resource settings and areas with limited healthcare access.","PeriodicalId":125330,"journal":{"name":"2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127038580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

BlanketGen - A Synthetic Blanket Occlusion Augmentation Pipeline for Motion Capture Datasets BlanketGen -一个用于运动捕捉数据集的合成毯遮挡增强管道

2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG) Pub Date : 2022-10-21 DOI: 10.1109/ENBENG58165.2023.10175320

João Carmona, Tam'as Kar'acsony, Joao Paulo Cunha

引用次数: 2

BlanketSet - A Clinical Real-World In-Bed Action Recognition and Qualitative Semi-Synchronised Motion Capture Dataset BlanketSet -临床真实世界床上动作识别和定性半同步动作捕捉数据集

2023 IEEE 7th Portuguese Meeting on Bioengineering (ENBENG) Pub Date : 2022-10-07 DOI: 10.1109/ENBENG58165.2023.10175335

João Carmona, Tam'as Kar'acsony, Joao Paulo Cunha

引用次数: 0