Rare Earth Elements and Yttrium (REY) are widely used as proxies for environmental conditions and biogeochemical processes, but have also become (micro)contaminants of surface waters worldwide. Soft tissues and shells of mussels are increasingly used in environmental science and geology as bioarchives for REY, but REY fractionation by and in these organisms is still not well understood. We report on the distribution of REY in different compartments of marine M.
View Article and Find Full Text PDFThe use of the rare earth element gadolinium (Gd) in contrast agents for magnetic resonance imaging has led to a significant (micro-)contamination of riverine and coastal environments in many parts of the world. This study comprises a detailed investigation on the rare earth elements and yttrium inventory of the North Sea and also reports data for the major tributaries Thames, Rhine, Ems, Weser and Elbe. We show that large parts of the southern North Sea, including the Wadden Sea UNESCO Natural World Heritage site, are (micro)contaminated with Gd from Gd-based contrast agents (GBCA).
View Article and Find Full Text PDFAnthropogenic gadolinium from MRI contrast agents has been detected in surface waters worldwide. It is released with the treated effluents of wastewater treatment plants, similar to other wastewater-derived substances (WWDS) such as pharmaceuticals and personal care products. We determined concentrations of the rare earth elements in tap water from Berlin, Germany, using an automated preconcentration procedure that is both time- and cost-efficient.
View Article and Find Full Text PDFThe essential utilization of rare earth elements (REEs) for the production of several electronic devices is making the demand for them being increased all the time. This extensive use of these elements has also increased concern about human and environmental health. Previous studies have shown that REE levels are higher in environmental samples near mining sites, and they are highly possible to be transferred to biota.
View Article and Find Full Text PDF: The management of early breast cancer (BC) needs supervision and skill maintenance, and should be performed by specialists working as a team in multidisciplinary breast units. This approach aims to improve the long-term survival and quality of life of patients with BC. : This was a prospective observational study including patients newly diagnosed with operable BC.
View Article and Find Full Text PDFBreast cancer remains the most common cause of cancer death among women. Despite its considerable histological and molecular heterogeneity, those characteristics are not distinguished in most definitions of oligometastatic disease and clinical trials of oligometastatic breast cancer. After an exhaustive review of the literature covering all aspects of oligometastatic breast cancer, 35 experts from the European Organisation for Research and Treatment of Cancer Imaging and Breast Cancer Groups elaborated a Delphi questionnaire aimed at offering consensus recommendations, including oligometastatic breast cancer definition, optimal diagnostic pathways, and clinical trials required to evaluate the effect of diagnostic imaging strategies and metastasis-directed therapies.
View Article and Find Full Text PDFA passive flexible patch for human skin temperature measurement based on contact sensing and contactless interrogation is presented. The patch acts as an RLC resonant circuit embedding an inductive copper coil for magnetic coupling, a ceramic capacitor as the temperature-sensing element and an additional series inductor. The temperature affects the capacitance of the sensor and consequently the resonant frequency of the RLC circuit.
View Article and Find Full Text PDFOnly few datasets on scandium (Sc) and rare earths and yttrium (REY) in rivers are available and the behaviour of Sc in the hydrosphere is poorly understood. We determined Sc and REY concentrations in the dissolved fraction of twelve boreal rivers in Sweden, which show low conductivity, circumneutral pH and elevated dissolved organic carbon (DOC). Scandium concentrations vary between 189 and 1170 pmol/l and are at the high end of the range reported for rivers worldwide.
View Article and Find Full Text PDFBackground: Immune responses against tumors are subject to negative feedback regulation. Immune checkpoint inhibitors (ICIs) blocking Programmed cell death protein 1 (PD-1), a receptor expressed on T cells, or its ligand PD-L1 have significantly improved the treatment of cancer, in particular malignant melanoma. Nevertheless, responses and durability are variables, suggesting that additional critical negative feedback mechanisms exist and need to be targeted to improve therapeutic efficacy.
View Article and Find Full Text PDFThis work presents a novel development of the impact-based mechanism for piezoelectric vibration energy harvesters. More precisely, the effect of an impacting mass on a cantilever piezoelectric transducer is studied both in terms of the tip mass value attached to the cantilever and impact position to find an optimal condition for power extraction. At first, the study is carried out by means of parametric analyses at varying tip mass and impact position on a unimorph MEMS cantilever, and a suitable physical interpretation of the associated electromechanical response is given.
View Article and Find Full Text PDFThis work proposes a mono-axial piezoelectric energy harvester based on the innovative combination of magnetic plucking and indirect impacts, e.g., impacts happening on the package of the harvester.
View Article and Find Full Text PDFRadiogenic isotope systems are important geochemical tools to unravel geodynamic processes on Earth. Applied to ancient marine chemical sediments such as banded iron formations, the short-lived Hf-W isotope system can serve as key instrument to decipher Earth's geodynamic evolution. Here we show high-precision W isotope data of the 2.
View Article and Find Full Text PDFThe use of rare earths and yttrium (REY) in high-technology products is accompanied by their increasing release into the environment. Concerns regarding the (eco-)toxicity and bioaccumulation of these emerging contaminants highlight the need for research on REY uptake by (aquatic) plants. Duckweeds are widespread macrophytes in lentic waters and receive increasing attention as a potential protein-rich food additive.
View Article and Find Full Text PDFMulti-converter piezoelectric harvesters based on mono-axial and bi-axial configurations are proposed. The harvesters exploit two and four piezoelectric converters (PCs) and adopt an impinging spherical steel ball to harvest electrical energy from human motion. When the harvester undergoes a shake, a tilt, or a combination of the two, the ball hits one PC, inducing an impact-based frequency-up conversion.
View Article and Find Full Text PDFBanded iron formations (BIFs) were deposited before and concurrent with the Great Oxidation Event at ∼2.33 Ga. They provide useful archives that document the transformation of the Precambrian hydrosphere from anoxic to progressively oxygenated conditions.
View Article and Find Full Text PDFObjective: To analyze oncological patients' perception of telemedicine during the COVID-19 pandemic.
Methods: A total of 345 women, of whom 267 experienced breast cancer and 78 experienced a gynecological cancer, were enrolled. Specific questionnaires about their experiences and feelings about telemedicine in the COVID-19 era were collected.
Objective: To evaluate the incidence of occult uterine sarcomas and investigate whether an accurate and well-established preoperative assessment for uterine fibroids could help identify uterine sarcomas more effectively.
Methods: A retrospective analysis of patients who underwent gynecological laparoscopic surgery for presumed uterine fibroids at Sant'Anna Hospital, a single tertiary institute in Turin, Italy, between January 2003 and December 2019.
Results: Over the 17-year period, 5826 laparoscopic surgical procedures (myomectomies or subtotal/total hysterectomies) were performed for presumed uterine fibroids.
Scandium is a critical raw material that is essential for the EU economy because of its potential application in enabling technologies such as fuel cells and lightweight materials. As there is currently no secure supply of Sc, several projects worldwide evaluate potential Sc sources. While elsewhere in Europe emphasis is placed upon secondary resources such as red mud, we investigated the potential of industrial garnet sand and its waste products.
View Article and Find Full Text PDFEur J Obstet Gynecol Reprod Biol
October 2020
Objective: Intraoperative specimen mammography (ISM) is a diffuse technique that allows surgeons to check specimens immediately after lumpectomy. Although the specimen is slightly compressed, the radiological image can be distorted by tissue overlap, and this may affect the evaluation of tumour borders, resulting in extension of the lumpectomy. As ISM may be less precise due to inadequate compression, a vacuum effect was applied to the specimen to increase the precision of margin detection.
View Article and Find Full Text PDFA technique and electronic circuit for contactless electromagnetic interrogation of piezoelectric micro-electromechanical system (MEMS) resonator sensors are proposed. The adopted resonator is an aluminum-nitride (AlN) thin-film piezoelectric-on-silicon (TPoS) disk vibrating in radial contour mode at about 6.3 MHz.
View Article and Find Full Text PDFBackground/aim: The aim of the study was to evaluate whether residual tumor assessment by magnetic resonance imaging (MRI) after neoadjuvant chemotherapy (NACT) is fundamental for a successive surgical strategy.
Patients And Methods: We collected 55 MRIs performed after NACT.
Results: Pathological response rate was 20%.
Pediatr Gastroenterol Hepatol Nutr
January 2020