Miracle-dz/UniFAR-FTUs huggingface dataset:
Repeated use food contact materials: A categorisation approach in support of risk assessment

ABSTRACT The current migration assessment requirements regarding safety of plastic food contact materials in Europe (e.g. kitchen utensils, kitchen appliances, packaging, etc.) widely rely on migration testing. According to Annexe V of Regulation (EU) No 10/2011 migration testing requirements consider the specificities of repeated use applications only to a limited extent. Repeated use food contact materials should be tested for three consecutive times at the worst-case contact time and temperature. If diffusion controlled, the migration decreases with increasing number of repeated uses. Compared to single use applications, repeated use food contact materials typically exhibit much shorter contact times, much lower ratios of surface in contact with a given amount of food, and in some cases higher temperatures. Compared to real use, in many cases highly overestimated migration testing result are observed. Overestimation by testing at the beginning of use may be coupled with underestimation at later times. National legislation of the Netherlands on food contact materials has established a classification for repeated use rubber materials based on the R-value indicating whether migration testing is required or not. The R-value considers in more detail specificities of repeated use applications. This publication investigates to which extent it is possible to apply the approach to plastics food contact materials in Europe. It is practically impossible to perform migration tests for various materials by putting them many times in contact with food over a long period of time, typically several years, at several temperatures and areas to food amount ratios migration. Modelling has therefore been used to predict migration from various food contact materials under different repeated use scenarios. Realistic diffusion properties of materials and migrant partitioning behaviour have been assumed to minimise the risk of underestimation.
Desempeño de las pruebas combinadas de IgM e IgG rápidas en la vigilancia ocupacional de COVID-19 en empresas colombianas

Resumen Introducción. Las pruebas combinadas de IgM e IgG rápidas pueden tener un papel importante en la vigilancia de la COVID-19 y en su diagnóstico, así como en la evaluación de la respuesta inmunológica y la verificación de los avances hacia la inmunidad de rebaño. Objetivo. Evaluar el desempeño de las pruebas rápidas de anticuerpos en la vigilancia ocupacional de la COVID-19 en un grupo de empresas colombianas. Materiales y métodos. Se usaron datos de la vigilancia ocupacional de empresas que hicieron pruebas serológicas periódicas a todo el personal desde finales de abril hasta comienzos de julio de 2020. Los trabajadores laboraban en grupos pequeños ("burbujas sociales") para evitar brotes y optimizar la vigilancia. La sensibilidad se estimó como si el muestreo respondiera a un diseño prospectivo. Se describieron, asimismo, los cambios en las pruebas serológicas por medio de rondas periódicas. Resultados. Se obtuvieron datos de 4.740 trabajadores, de los cuales solo 23 eran sintomáticos. En ellos se evidenciaron cambios de IgM(-)/IgG(-) a IgM(+), y luego a IgM(+)/ IgG(+) e IgG(+). La sensibilidad fue de 40,94 % para las IgM(+) y 47,95 % para las IgM(+)/ IgG(+), lo que implica que se pudo detectar un poco menos de la mitad de los casos. Conclusión. Las pruebas rápidas de anticuerpos tienen un papel en el proceso diagnóstico de la infección y deben evaluarse teniendo en cuenta el momento de la epidemia, el tipo de prueba comprada y las poblaciones de riesgo, dado que sus resultados dependen del número de contagios y de casos. En el contexto de la presente crisis sanitaria pueden optimizarse si se organizan los trabajadores en "burbujas sociales".
Population viability analyses in New Zealand: a review

Biodiversity assets often require conservation management, which, in turn, necessitates decisions about which ecosystem, community or species should be prioritised to receive resources. Population viability analysis (PVA) uses a suite of quantitative methods to estimate the likelihood of population decline and extinction for a given species, and can be used to assess a population’s status, providing useful information to decision-makers. In New Zealand, a range of taxa have been analysed using the PVA approach, but the scope of its implementation has not previously been reviewed. We compiled a database of 78 published PVAs for New Zealand indigenous fauna and flora, along with details of the species considered, the data used to parametrise the model, and the technical details of their implementation. We assessed the taxa and threat status of the species for which PVA were conducted relative to the distribution of taxa across threat classes in the New Zealand Threat Classification System database. There were clear biases in the species selected for analysis, notably an over-representation of birds and threatened species in general, and an under-representation of invertebrates and plants. Model parameterisation and implementation were often not reported in a transparent or standardised way, which hinders model communication and reconstruction. To maximise the benefit of PVAs, we suggest that more attention should be given to the ecosystem-level importance of species, and to species whose threat status is changing rapidly or are not yet threatened. More clearly describing the parameterisation, underlying assumptions and implementation of PVAs will help to better contextualise their results and support reproducible ecological science and decision-making.
Isolation and Characterization of Three Sodium-Phosphate Cotransporter Genes and Their Transcriptional Regulation in the Grass Carp Ctenopharyngodon idella

It is important to explore the regulatory mechanism of phosphorus homeostasis in fish, which help avoid the risk of P toxicity and prevent P pollution in aquatic environment. The present study obtained the full-length cDNA sequences and the promoters of three SLC20 members (slc20a1a, slc20a1b and slc20a2) from grass carp Ctenopharyngodon idella, and explored their responses to inorganic phosphorus (Pi). Grass carp SLC20s proteins possessed conservative domains and amino acid sites relevant with phosphorus transport. The mRNAs of three slc20s appeared in the nine tissues, but their expression levels were tissue-dependent. The binding sites of three transcription factors (SREBP1, NRF2 and VDR) were predicted on the slc20s promoters. The mutation and EMSA analysis indicated that: (1) SREBP1 binding site (−783/−771 bp) negatively but VDR (−260/−253 bp) binding site positively regulated the activities of slc20a1a promoter; (2) SREBP1 (−1187/−1178 bp), NRF2 (−572/−561 bp) and VDR(615/−609 bp) binding sites positively regulated the activities of slc20a1b promoter; (3) SREBP1 (−987/−977 bp), NRF2 (−1469/−1459 bp) and VDR (−1124/−1117 bp) binding sites positively regulated the activities of the slc20a2 promoter. Moreover, Pi incubation significantly reduced the activities of three slc20s promoters, and Pi-induced transcriptional inactivation of slc20s promoters abolished after the mutation of the VDR element but not SREBP1 and NRF2 elements. Pi incubation down-regulated the mRNA levels of three slc20s. For the first time, our study elucidated the transcriptional regulatory mechanisms of SLC20s and their responses to Pi, which offered new insights into the Pi homeostatic regulation and provided the basis for reducing phosphorus discharge into the waters.
Blinatumomab + ponatinib for relapsed/refractory Philadelphia chromosome-positive acute lymphoblastic leukemia in adults

Abstract We retrospectively examined the results of a new chemo-free approach combining blinatumomab with ponatinib (blina/pona) in 26 relapsed/refractory Philadelphia positive (Ph+) acute lymphoblastic leukemia (ALL) patients. All but one achieved complete morphologic remission, and 23 achieved a complete molecular response. With a median follow-up of 34.4 months, the median overall (OS) and event-free (EFS) survivals were 20 and 15.3 months, respectively. After blina/pona, 8 patients underwent an allotransplant (allo), while among the 18 non-transplanted cases, 15 received ponatinib in maintenance. Fifteen relapse/progressions occurred with a significant difference between allo and non allo cases (12.5% vs 82.3%, p = 0.003). However, OS and EFS were similar between both groups. Finally, blina/pona was well tolerated with eight reversible neurologic events and three cytokine release syndromes. Prospective studies are needed to properly assess the safety, tolerability and efficacy of the combination therapy.
Imaging features of breast cancer molecular subtypes: state of the art

Characterization of breast cancer molecular subtypes has been the standard of care for breast cancer management. We aimed to provide a review of imaging features of breast cancer molecular subtypes for the field of precision medicine. We also provide an update on the recent progress in precision medicine for breast cancer, implications for imaging, and recent observations in longitudinal functional imaging with radiomics.
Thermoplastic composite matrices with improved solvent resistance

In order to improve solvent resistance of aromatic thermoplastic polymers, ethynyl-terminated aromatic sulfone polymers (ETS), sulfone/ester polymers (SEPE) containing pendent ethynyl groups, and phenoxy resin containing pendent ethynyl groups are synthesized. Cured polysulfones and phenoxy resins containing ethynyl groups on the ends or pendent on the molecules exhibited systematic behavior in solvent resistance, film flexibility, and toughness as a function of crosslink density. The film and composite properties of a cured solvent-resistant ETS were better than those of a commercially available solvent sensitive polysulfone. The study was part of a NASA program to better understand the trade-offs between solvent resistance, processability and mechanical properties which may be useful in designing composite structures for aerospace vehicles.
Nanotechnology for catalysis and solar energy conversion

This roadmap on Nanotechnology for Catalysis and Solar Energy Conversion focuses on the application of nanotechnology in addressing the current challenges of energy conversion: ‘high efficiency, stability, safety, and the potential for low-cost/scalable manufacturing’ to quote from the contributed article by Nathan Lewis. This roadmap focuses on solar-to-fuel conversion, solar water splitting, solar photovoltaics and bio-catalysis. It includes dye-sensitized solar cells (DSSCs), perovskite solar cells, and organic photovoltaics. Smart engineering of colloidal quantum materials and nanostructured electrodes will improve solar-to-fuel conversion efficiency, as described in the articles by Waiskopf and Banin and Meyer. Semiconductor nanoparticles will also improve solar energy conversion efficiency, as discussed by Boschloo et al in their article on DSSCs. Perovskite solar cells have advanced rapidly in recent years, including new ideas on 2D and 3D hybrid halide perovskites, as described by Spanopoulos et al ‘Next generation’ solar cells using multiple exciton generation (MEG) from hot carriers, described in the article by Nozik and Beard, could lead to remarkable improvement in photovoltaic efficiency by using quantization effects in semiconductor nanostructures (quantum dots, wires or wells). These challenges will not be met without simultaneous improvement in nanoscale characterization methods. Terahertz spectroscopy, discussed in the article by Milot et al is one example of a method that is overcoming the difficulties associated with nanoscale materials characterization by avoiding electrical contacts to nanoparticles, allowing characterization during device operation, and enabling characterization of a single nanoparticle. Besides experimental advances, computational science is also meeting the challenges of nanomaterials synthesis. The article by Kohlstedt and Schatz discusses the computational frameworks being used to predict structure–property relationships in materials and devices, including machine learning methods, with an emphasis on organic photovoltaics. The contribution by Megarity and Armstrong presents the ‘electrochemical leaf’ for improvements in electrochemistry and beyond. In addition, biohybrid approaches can take advantage of efficient and specific enzyme catalysts. These articles present the nanoscience and technology at the forefront of renewable energy development that will have significant benefits to society.
Burden of aneurysmal subarachnoid haemorrhage deaths in middle-aged people is relatively high

The number of deaths resulting from aneurysmal subarachnoid haemorrhage (aSAH) is commonly considered negligible in comparison with other causes of death. In fact, it has been estimated that subarachnoid haemorrhage accounts for only 4% of stroke deaths.1 However, addressing the aSAH death toll is challenging since many aSAH deaths happen outside of hospitals and are commonly classified as cardiac deaths when autopsies are not done.2 3 Middle-aged people are affected most frequently by aSAH. Since cancer-, traffic-, alcohol- and cardiovascular-related deaths are decreasing in middle-aged people in high-income countries,4 we hypothesise that the proportion of aSAH deaths may be increasing in this age group. Therefore, we aimed to determine the proportion of aSAH deaths relative to other causes of death in middle-aged people. ### Ethical considerations Statistics Finland and the National Institute of Health and Welfare approved the data extractions and analysis from the nationwide Cause of Death (CDR) and Hospital Discharge Registers (HDR). According to Finnish legislation, no separate informed consent was required, as we did not access personally identifiable information. ### Study period Since 1936, all deaths in Finland have been archived to the nationwide CDR governed by Statistics Finland. The causes of death have been classified using the 10th version of the International Statistical Classification of Diseases and Related Health Problems (ICD-10) coding from 1996 onwards. To avoid possible misclassification immediately after the transition to ICD-10, we included death diagnoses between 1998 and 2017. ### Causes of death We extracted aSAH deaths registered to the CDR with the four-character ICD-10 classification codes (I60.0–I60.6). We used the nationwide HDR …
Generation and Characterization of Universal Live-Attenuated Influenza Vaccine Candidates Containing Multiple M2e Epitopes

Influenza viruses constantly evolve, reducing the overall protective effect of routine vaccination campaigns. Many different strategies are being explored to design universal influenza vaccines capable of protecting against evolutionary diverged viruses. The ectodomain of influenza A M2e protein (M2e) is among the most promising targets for universal vaccine design. Here, we generated two recombinant live attenuated influenza vaccines (LAIVs) expressing additional four M2e tandem repeats (4M2e) from the N-terminus of the viral hemagglutinin (HA) protein, in an attempt to enhance the M2e-mediated cross-protection. The recombinant H1N1+4M2e and H3N2+4M2e viruses retained growth characteristics attributable to traditional LAIV viruses and induced robust influenza-specific antibody responses in BALB/c mice, although M2e-specific antibodies were raised only after two-dose vaccination with LAIV+4M2e viruses. Mice immunized with either LAIV or LAIV+4M2e viruses were fully protected against a panel of heterologous influenza challenge viruses suggesting that antibody and cell-mediated immunity contributed to the protection. The protective role of the M2e-specific antibody was seen in passive serum transfer experiments, where enhancement in the survival rates between classical LAIV and chimeric H3N2+4M2e LAIV was demonstrated for H3N2 and H5N1 heterologous challenge viruses. Overall, the results of our study suggest that M2e-specific antibodies induced by recombinant LAIV+4M2e in addition to cellular immunity by LAIV play an important role in conferring protection against heterologous viruses.
Scientific Developments and Clinical Applications Utilizing Chondrons and Chondrocytes with Matrix for Cartilage Repair

Injuries to articular cartilage of the knee are increasingly common. The operative management of these focal chondral lesions continues to be problematic for the treating orthopedic surgeon secondary to the limited regenerative capacity of articular cartilage. The pericellular matrix (PCM) is a specialized, thin layer of the extracellular matrix that immediately surrounds chondrocytes forming a unit together called the chondron. The advancements in our knowledge base with regard to the PCM/chondrons as well as interterritorial matrix has permeated and led to advancements in product development in conjunction with minced cartilage, marrow stimulation, osteochondral allograft, and autologous chondrocyte implantation (ACI). This review intends to summarize recent progress in chondrocytes with matrix research, with an emphasis on the role the PCM/extracellular matrix (ECM) plays for favorable chondrogenic gene expression, as a barrier/filtration unit, and in osteoarthritis. The bulk of the review describes cutting-edge and evolving clinical developments and discuss these developments in light of underlying basic science applications. Clinical applications of chondrocytes with matrix science include Reveille Cartilage Processor, Cartiform, and ACI with Spherox (which was recently recommended for the treatment of grade III or IV articular cartilage defects over 2 cm2 by the National Institute of Health and Care Excellence [NICE] in the United Kingdom). The current article presents a comprehensive overview of both the basic science and clinical results of these next-generation cartilage repair techniques by focusing specifically on the scientific evolution in each category as it pertains with underlying chondrocytes with matrix theory.
Factors Influencing US Physician and Surgeon Suicide Rates 2003 to 2017

Background and Objectives: With the rate of physician suicide increasing, more research is needed to implement adequate prevention interventions. This study aims to identify trends and patterns in physician/surgeon suicide and the key factors influencing physician suicide. We hope such information can highlight areas for targeted interventions to decrease physician suicide. Methods: Review of Centers for Disease Control and Preventions National Violent Death Reporting System (NVDRS) for 2003 to 2017 of physician and dentists dying by suicide. Twenty-eight medical, surgical, and dental specialties were included. Results: Nine hundred five reported suicides were reviewed. Physician suicides increased from 2003 to 2017. Majority surgeons’ suicides were middle-aged, White males. Orthopedic surgeons had the highest prevalence of suicide among surgical fields (28.2%). Black/African American surgeons were 56% less likely [odds ratio (OR) = 0.44, 95% confidence interval (CI): 0.06-3.16] and Asian/Pacific Islander were 438% more likely (OR = 5.38, 95% CI: 2.13–13.56) to die by suicide. Surgeons were 362% more likely to have a history of a mental disorder (OR = 4.62, 95% CI: 2.71–7.85), were 139% more likely to use alcohol (OR = 2.39, 95% CI: 1.36–4.21), and were 289% more likely to have experienced civil/legal issues (OR = 3.89, 95% CI: 1.36–11.11). Conclusions: The prevalence of physician suicide increased over the 2003 to 2017 time-frame with over a third of deaths occurring from 2015 to 2017. Among surgeons, orthopedics has the highest prevalence of reported suicide. Risk factors for surgeon suicide include Asian/Pacific Islander race/ethnicity, older age, history of mental disorder, alcohol use, and civil/legal issues.
Evaluation of groundwater extraction for remediation of petroleum‐contaminated aquifers

Past experience has shown that restoration of an aquifer to drinking water quality by groundwater extraction and surface treatment may require many years of pumping. In this research, a mathematical model of hydrocarbon dissolution is developed to aid in the evaluation of groundwater remediation systems. The model assumes that residual hydrocarbon is distributed between two fractions: ( 1 ) a fast fraction in equilibrium with the aqueous phase and (2) a slow fraction in which mass transfer is limited. Relationships for simulating equilibrium par titioning are based on classical liquid-liquid equilibrium theory. Column experiments were performed to test the model and examine the kinetics of aromatic hydrocarbon dissolution as residual hydrocarbon ages. The hydrocarbon dissolution process included an initial equilibrium period during which dissolved hydrocarbon concentrations were high and roughly constant followed by a rapid drop-off period and an asymptotic period during which dissolved hydrocarbon concentrations were low and declined slowly. After passing more than 700 pore volumes of water through the column, between 8 and 10% of the original toluene and xylene isomers remained in the column. Model simulations were con ducted to evaluate the effect of pulsed pumping on groundwater cleanup time. Water Environ. Res., 64, 28 (1992).
Assessment of macro and microvascular function in aging males.

Aging is associated with reductions in endothelial function, observations primarily reported using brachial artery ultrasound. There is growing interest in the use of peripheral artery tonometry (PAT) of microvessels in the fingertip to assess endothelial function because it is less technically demanding and has a high sensitivity and specificity for assessing coronary endothelial function. Moreover, similar to brachial artery flow mediated dilation (FMD), PAT predicts cardiovascular disease (CVD) outcomes. However, the relation between PAT and FMD have yet to be examined in the context of aging. To address this question, reactive hyperemic index (RHI) using EndoPAT and flow-mediated dilation (FMD) using brachial artery ultrasound were assessed after five minutes of forearm ischemia in twenty younger (18-40 years old; 29±4 years) and twenty older (60-75 years old; 65±4 years) healthy adult men. Higher values of both FMD and RHI indicate better endothelial function. Endothelial function assessed via brachial artery FMD was lower in older (4.8±2.1%), compared to younger (7.5±1.6%) men (p<0.001). In contrast, the RHI assessed via PAT was greater in older (2.2±0.6), compared to younger (1.8±0.5) men (p=0.014). FMD and RHI were not correlated (r=-0.15; p=0.35). We conclude that PAT may not be an appropriate measure to evaluate age-associated changes in endothelial function.