| 1. |
- Khatri, C, et al.
(författare)
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Outcomes after perioperative SARS-CoV-2 infection in patients with proximal femoral fractures: an international cohort study
- 2021
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Ingår i: BMJ open. - : BMJ. - 2044-6055. ; 11:11, s. e050830-
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Tidskriftsartikel (refereegranskat)abstract
- Studies have demonstrated high rates of mortality in people with proximal femoral fracture and SARS-CoV-2, but there is limited published data on the factors that influence mortality for clinicians to make informed treatment decisions. This study aims to report the 30-day mortality associated with perioperative infection of patients undergoing surgery for proximal femoral fractures and to examine the factors that influence mortality in a multivariate analysis.SettingProspective, international, multicentre, observational cohort study.ParticipantsPatients undergoing any operation for a proximal femoral fracture from 1 February to 30 April 2020 and with perioperative SARS-CoV-2 infection (either 7 days prior or 30-day postoperative).Primary outcome30-day mortality. Multivariate modelling was performed to identify factors associated with 30-day mortality.ResultsThis study reports included 1063 patients from 174 hospitals in 19 countries. Overall 30-day mortality was 29.4% (313/1063). In an adjusted model, 30-day mortality was associated with male gender (OR 2.29, 95% CI 1.68 to 3.13, p<0.001), age >80 years (OR 1.60, 95% CI 1.1 to 2.31, p=0.013), preoperative diagnosis of dementia (OR 1.57, 95% CI 1.15 to 2.16, p=0.005), kidney disease (OR 1.73, 95% CI 1.18 to 2.55, p=0.005) and congestive heart failure (OR 1.62, 95% CI 1.06 to 2.48, p=0.025). Mortality at 30 days was lower in patients with a preoperative diagnosis of SARS-CoV-2 (OR 0.6, 95% CI 0.6 (0.42 to 0.85), p=0.004). There was no difference in mortality in patients with an increase to delay in surgery (p=0.220) or type of anaesthetic given (p=0.787).ConclusionsPatients undergoing surgery for a proximal femoral fracture with a perioperative infection of SARS-CoV-2 have a high rate of mortality. This study would support the need for providing these patients with individualised medical and anaesthetic care, including medical optimisation before theatre. Careful preoperative counselling is needed for those with a proximal femoral fracture and SARS-CoV-2, especially those in the highest risk groups.Trial registration numberNCT04323644
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| 2. |
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| 3. |
- Murari, A., et al.
(författare)
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A control oriented strategy of disruption prediction to avoid the configuration collapse of tokamak reactors
- 2024
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Ingår i: Nature Communications. - 2041-1723 .- 2041-1723. ; 15:1
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Tidskriftsartikel (refereegranskat)abstract
- The objective of thermonuclear fusion consists of producing electricity from the coalescence of light nuclei in high temperature plasmas. The most promising route to fusion envisages the confinement of such plasmas with magnetic fields, whose most studied configuration is the tokamak. Disruptions are catastrophic collapses affecting all tokamak devices and one of the main potential showstoppers on the route to a commercial reactor. In this work we report how, deploying innovative analysis methods on thousands of JET experiments covering the isotopic compositions from hydrogen to full tritium and including the major D-T campaign, the nature of the various forms of collapse is investigated in all phases of the discharges. An original approach to proximity detection has been developed, which allows determining both the probability of and the time interval remaining before an incoming disruption, with adaptive, from scratch, real time compatible techniques. The results indicate that physics based prediction and control tools can be developed, to deploy realistic strategies of disruption avoidance and prevention, meeting the requirements of the next generation of devices.
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| 7. |
- Abazov, V. M., et al.
(författare)
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The upgraded DO detector
- 2006
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Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 565:2, s. 463-537
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Tidskriftsartikel (refereegranskat)abstract
- The DO experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements to the Tevatron and to enhance its physics capabilities. We describe the new elements of the detector, including the silicon microstrip tracker, central fiber tracker, solenoidal magnet, preshower detectors, forward muon detector, and forward proton detector. The uranium/liquid -argon calorimeters and central muon detector, remaining from Run 1, are discussed briefly. We also present the associated electronics, triggering, and data acquisition systems, along with the design and implementation of software specific to DO.
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| 8. |
- Jacobsson, T. Jesper, 1984-, et al.
(författare)
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An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles
- 2022
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Ingår i: Nature Energy. - : Springer Nature. - 2058-7546. ; 7:1, s. 107-115
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Tidskriftsartikel (refereegranskat)abstract
- Large datasets are now ubiquitous as technology enables higher-throughput experiments, but rarely can a research field truly benefit from the research data generated due to inconsistent formatting, undocumented storage or improper dissemination. Here we extract all the meaningful device data from peer-reviewed papers on metal-halide perovskite solar cells published so far and make them available in a database. We collect data from over 42,400 photovoltaic devices with up to 100 parameters per device. We then develop open-source and accessible procedures to analyse the data, providing examples of insights that can be gleaned from the analysis of a large dataset. The database, graphics and analysis tools are made available to the community and will continue to evolve as an open-source initiative. This approach of extensively capturing the progress of an entire field, including sorting, interactive exploration and graphical representation of the data, will be applicable to many fields in materials science, engineering and biosciences.
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| 9. |
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| 12. |
- Alves, Gustavo R., et al.
(författare)
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International Cooperation for Remote Laboratory Use
- 2018
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Ingår i: Contributions to Higher Engineering Education. - Singapore : Springer. - 9789811089176 ; , s. 1-31
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Bokkapitel (refereegranskat)abstract
- Experimenting is fundamental to the training process of all scientists and engineers. While experiments have been traditionally done inside laboratories, the emergence of Information and Communication Technologies added two alternatives accessible anytime, anywhere. These two alternatives are known as virtual and remote laboratories and are sometimes indistinguishably referred as online laboratories. Similarly to other instructional technologies, virtual and remote laboratories require some effort from teachers in integrating them into curricula, taking into consideration several factors that affect their adoption (i.e., cost) and their educational effectiveness (i.e., benefit). This chapter analyzes these two dimensions and sustains the case where only through international cooperation it is possible to serve the large number of teachers and students involved in engineering education. It presents an example in the area of electrical and electronics engineering, based on a remote laboratory named Virtual Instruments System in Reality, and it then describes how a number of European and Latin American institutions have been cooperating under the scope of an Erasmus+ project, for spreading its use in Brazil and Argentina.
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| 16. |
- Beal, Jacob, et al.
(författare)
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Robust estimation of bacterial cell count from optical density
- 2020
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Ingår i: Communications Biology. - : Springer Science and Business Media LLC. - 2399-3642. ; 3:1
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Tidskriftsartikel (refereegranskat)abstract
- Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data.
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| 17. |
- Ekman, S., et al.
(författare)
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Treatment (Tx) patterns and overall survival (OS) in patients (pts) with NSCLC in Sweden : A SCAN-LEAF study analysis from the I-O Optimise initiative
- 2019
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Ingår i: Annals of Oncology. - : Elsevier BV. - 0923-7534. ; 30:Suppl 2, s. 17-17
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Konferensbidrag (refereegranskat)abstract
- Background: As part of I-O Optimise, a multinational research platform providing real-world insights into the management of lung cancers, the SCAN-LEAF study aims to describe the epidemiology, clinical care and outcomes for pts with NSCLC in Scandinavia. We report initial Tx and OS for pts with NSCLC prior to the availability of immunotherapies in Sweden. Methods: The analysis includes all adult pts diagnosed with NSCLC at Uppsala and Karolinska (Stockholm) University Hospitals from 2012 to 2015 (follow-up to Dec 2016). Electronic medical record data were extracted using Pygargus CXP software and linked with national registries. Bespoke rule-based algorithms were applied to describe Tx patterns; Kaplan–Meier methods were used to estimate OS. Results: 2779 pts were diagnosed with incident NSCLC (median age, 70 yrs [range: 22–96; 14.2% ≥80]; male, 48.5%; histology: non-squamous (NSQ), 70.9%, squamous (SQ), 17.7%, other, 11.4%; stage distribution: I, 19.3%; II, 7.7%; IIIA, 12.3%; IIIB, 7.2%; IV, 51.2%). Initial Tx (≤6 months from diagnosis) by stage and yr of diagnosis is shown in the table. Median OS (months) for NSQ and SQ pts: not reached and 52.8 in stage I, 43.2 and 23.6 in stage II, 26.7 and 20.4 in stage IIIA, 12.5 and 12.9 in stage IIIB, and 7.6 and 6.1 in stage IV, respectively. Among stage IIIB–IV pts, 60.7% (NSQ) and 53.5% (SQ) had ≥1 line of systemic anti-cancer therapy (SACT); median OS was 12.2 (NSQ) and 10.4 (SQ) months in pts on SACT, and 3.1 (NSQ) and 3.7 (SQ) months in pts not on SACT. Ongoing analyses will assess factors associated with SACT receipt in stage IIIB–IV pts. Conclusions: Swedish pts with NSCLC had a high burden of disease, with most diagnosed at stage IV and a median OS of 1 yr in late-stage pts receiving SACT. There is also scope for improved prognosis in pts diagnosed at early stages, particularly in SQ pts. Future analyses will assess the potential impact of recent improvements in diagnostics and therapeutics on Tx patterns and OS in Swedish NSCLC pts.
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| 18. |
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| 19. |
- Sørensen, J. B., et al.
(författare)
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Evolution of overall survival (OS) in patients (pts) with incident NSCLC in Denmark and Sweden : A SCAN-LEAF study analysis from the I-O Optimise initiative
- 2019
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Ingår i: Annals of Oncology. - : Elsevier BV. - 0923-7534. ; 30:Suppl 2, s. 16-17
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Konferensbidrag (refereegranskat)abstract
- Background: As part of I-O Optimise, a multinational research platform providing real-world insights into the management of lung cancers, the SCAN-LEAF study aims to describe the epidemiology, clinical care, and outcomes for pts with NSCLC in Scandinavia. Here, we report temporal OS trends among pts diagnosed with incident NSCLC from 2005 to 2015 in Denmark and Sweden. Methods: The SCAN-LEAF Danish and Swedish cohorts were established by linking respective national registries and include all adult pts diagnosed with incident NSCLC from Jan 2005 to Dec 2015 (follow-up to Dec 2016). The Kaplan–Meier method was used to estimate OS at 1, 3, and 5 yrs by histology (non-squamous cell [NSQ] or squamous cell [SQ]), TNM stage, and yr of diagnosis; changes in OS over time were assessed using the Cochrane–Armitage test. Results: 31,939 pts in Denmark and 30,067 pts in Sweden were diagnosed with NSCLC from 2005 to 2015. Most were diagnosed at stage IV (51.6% and 48.4%, respectively) and had NSQ histology (54.4% and 60.4%). Statistically significant trends (P < 0.05) for improved OS accompanied by an absolute OS rate increase of > 5% over the analysis period were seen for NSQ pts at 1 yr for all stages in both countries (Table); at 3 yrs for stages I–IIIB in Denmark (P ≤ 0.027), and stages I–II (P ≤ 0.0013) in Sweden; and at 5 yrs for stages I–II (P ≤ 0.026) in both countries. For SQ pts, this was seen only at 1 yr for stage IIIA in Denmark and stage I in Sweden (Table), and at 5 yrs for stage IIIA in Denmark (p = 0.02). Conclusions: Despite some improvements between 2005 and 2015, mainly in the short-term survival of pts with early-stage NSCLC, long-term OS rates for pts with late-stage disease did not change significantly and remained low. Even in pts with early-stage disease, OS outcomes were suboptimal, with a particular unmet need in the SQ population. Future analyses including data after 2015 will evaluate the potential impact on OS of increased use of new TKIs and immune checkpoint inhibitors.
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| 20. |
- Waldman, Meryl, et al.
(författare)
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COVID-19 in Patients with Glomerular Disease: Follow-Up Results from the IRoc-GN International Registry
- 2022
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Ingår i: KIDNEY360. - : AMER SOC NEPHROLOGY. - 2641-7650. ; 3:2, s. 293-306
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Tidskriftsartikel (refereegranskat)abstract
- Background The acute and long-term effects of severe acute respiratory syndrome coronavirus 2 infection in individuals with GN are still unclear. To address this relevant issue, we created the International Registry of COVID-19 infection in GN.Methods We collected serial information on kidney-related and-unrelated outcomes from 125 GN patients (63 hospitalized and 62 outpatients) and 83 non-GN hospitalized patients with coronavirus disease 2019 (COVID-19) and a median follow-up period of 6.4 (interquartile range 2.3-9.6) months after diagnosis. We used logistic regression for the analyses of clinical outcomes and linear mixed models for the longitudinal analyses of eGFR. All multiple regression models were adjusted for age, sex, ethnicity, and renin-angiotensin-aldosterone system inhibitor use.Results After adjustment for pre-COVID-19 eGFR and other confounders, mortality and AKI did not differ between GN patients and controls (adjusted odds ratio for AKI=1.28; 95% confidence interval [CI], 0.46 to 3.60; P=0.64). The main predictor of AKI was pre-COVID-19 eGFR (adjusted odds ratio per 1 SD unit decrease in eGFR=3.04; 95% CI, 1.76 to 5.28; P,0.001). GN patients developing AKI were less likely to recover pre-COVID19 eGFR compared with controls (adjusted 6-month post-COVID-19 eGFR=0.41; 95% CI, 0.25 to 0.56; times preCOVID-19 eGFR). Shorter duration of GN diagnosis, higher pre-COVID-19 proteinuria, and diagnosis of focal segmental glomerulosclerosis or minimal change disease were associated with a lower post-COVID-19 eGFR.Conclusions Pre-COVID-19 eGFR is the main risk factor for AKI regardless of GN diagnosis. However, GN patients are at higher risk of impaired eGFR recovery after COVID-19-associated AKI. These patients (especially those with high baseline proteinuria or a diagnosis of focal segmental glomerulosclerosis or minimal change disease) should be closely monitored not only during the acute phases of COVID-19 but also after its resolution.
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| 21. |
- Crespi, S., et al.
(författare)
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Legionella maioricensis sp. nov., a new species isolated from the hot water distribution systems of a hospital and a shopping center during routine sampling
- 2023
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Ingår i: International Journal of Systematic and Evolutionary Microbiology. - : Microbiology Society. - 1466-5026 .- 1466-5034. ; 73:1
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Tidskriftsartikel (refereegranskat)abstract
- Two Legionella- like strains isolated from hot water distribution systems in 2012 have been characterized phenotypically, bio-chemically and genomically in terms of DNA relatedness. Both strains, HCPI- 6T and EUR- 108, exhibited biochemical pheno-typic profiles typical of Legionella species. Cells were Gram-negative motile rods which grew on BCYE alpha agar but not on blood agar and displayed phenotypic characteristics typical of the family Legionellaceae, including a requirement for L-cysteine and testing catalase positive. Both strains were negative for oxidase, urease, nitrate reduction and hippurate negative, and non -fermentative. The major ubiquinone was Q12 (59.4 % HCPI- 6T) and the dominant fatty acids were C16:1 omega 7c (28.4 % HCPI- 6T, 216 % EUR- 108), C16: 0 iso (222.5 % and 213 %) and C15: 0 anteiso (19.5 % and 223.5 %, respectively). The percent G+C content of genomic DNA was determined to be 39.3 mol %. The 16S rRNA gene, mip sequence and comparative genome sequence -based analyses (average nucleotide identity, ANI; digital DNA-DNA hybridization, dDDH; and phylogenomic treeing) demonstrated that the strains represent a new species of the genus Legionella. The analysis based on the 16S rRNA gene sequences showed that the sequence similarities for both strains ranged from 98.8-90.1 % to other members of the genus. The core genome- based phylogenomic tree (protein-concatemer tree based on concatenation of 418 proteins present in single copy) revealed that these two strains clearly form a separate cluster within the genus Legionella. ANI and dDDH values confirmed the distinctiveness of the strains. Based on the genomic, genotypic and phenotypic findings from a polyphasic study, the isolates are considered to represent a single novel species, for which the name Legionella maioricensis sp. nov. is proposed. The type strain is HCPI- 6T (=CCUG 75071T=CECT 30569T).
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| 22. |
- de la Fuente, Eduardo, et al.
(författare)
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The symbiotic and bipolar nebula M2-9: Morphological variability of the collimated ionized wind arising from the core
- 2022
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Ingår i: Publication of the Astronomical Society of Japan. - : Oxford University Press (OUP). - 2053-051X .- 0004-6264. ; 74:3, s. 594-601
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Tidskriftsartikel (refereegranskat)abstract
- We studied the central region of bipolar nebula M 2-9 using radio-continuum observations obtained from the Jansky Very Large Array (JVLA) and the Atacama Large Millimeter Array (ALMA) interferometers. This work presents new images at similar to 43 GHz (similar to 7.0 mm) and similar to 345 GHz (similar to 0.9 mm) with angular resolutions of similar to 0 ''.047 and 0 ''.09, respectively. The continuum emission at similar to 43 GHz shows an elongated jet-like structure perpendicular to the similar to 345 GHz observation. We conclude that both emissions could correspond to tracing an isothermal collimated fast wind with constant expansion velocity and being driven by the circumstellar ring traced by ALMA. Although this configuration has been discussed within the scope of planetary nebulae models, there is a remarkable fact: the collimated fast wind shows morphological spatial variability. This supports the idea of a symbiotic binary system within the innermost part of M 2-9, which would be composed of a white dwarf and an AGB star. The latter could explain the mirror symmetry observed at larger scales due to their orbital motion.
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| 28. |
- Moores, John E., et al.
(författare)
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Atmospheric movies acquired at the Mars Science Laboratory landing site : Cloud Morphology, Frequency and Significance to the Gale Crater Water Cycle and Phoenix Mission Results
- 2015
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Ingår i: Advances in Space Research. - : Elsevier BV. - 0273-1177 .- 1879-1948. ; 55:9, s. 2217-2238
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Tidskriftsartikel (refereegranskat)abstract
- We report on the first 360 sols (LS 150° to 5°), representing just over half a Martian year, of atmospheric monitoring movies acquired using the NavCam imager from the Mars Science Laboratory (MSL) Rover Curiosity. Such movies reveal faint clouds that are difficult to discern in single images. The data set acquired was divided into two different classifications depending upon the orientation and intent of the observation. Up to sol 360, 73 Zenith Movies and 79 Supra-Horizon Movies have been acquired and time-variable features could be discerned in 25 of each. The data set from MSL is compared to similar observations made by the Surface Stereo Imager (SSI) onboard the Phoenix Lander and suggests a much drier environment at Gale Crater (4.6°S) during this season than was observed in Green Valley (68.2°N) as would be expected based on latitude and the global water cycle. The optical depth of the variable component of clouds seen in images with features are up to 0.047 ± 0.009 with a granularity to the features observed which averages 3.8 degrees. MCS also observes clouds during the same period of comparable optical depth at 30 and 50 km that would suggest a cloud spacing of 2.0 to 3.3 km. Multiple motions visible in atmospheric movies support the presence of two distinct layers of clouds. At Gale Crater, these clouds are likely caused by atmospheric waves given the regular spacing of features observed in many Zenith movies and decreased spacing towards the horizon in sunset movies consistent with clouds forming at a constant elevation. Reanalysis of Phoenix data in the light of the NavCam equatorial dataset suggests that clouds may have been more frequent in the earlier portion of the Phoenix mission than was previously thought.
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| 31. |
- Sorensen, JB, et al.
(författare)
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Initial treatment and survival in Danish patients diagnosed with non-small-cell lung cancer (2005-2015): SCAN-LEAF study
- 2021
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Ingår i: Future oncology (London, England). - : Future Medicine Ltd. - 1744-8301 .- 1479-6694. ; 18:2, s. 205-214
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To describe initial treatment patterns and survival of patients diagnosed with non-small-cell lung cancer (NSCLC) in Denmark, before immune checkpoint inhibitor and later-generation tyrosine kinase inhibitor use. Patients & methods: Adults diagnosed with incident NSCLC (2005–2015; follow-up: 2016). Initial treatments and overall survival (OS) are reported. Results: 31,939 NSCLC patients (51.6% stage IV) were included. Increasing use of curative radiotherapy/chemoradiation for stage I, II/IIIA and IIIB NSCLC coincided with improved 2-year OS. Systemic anticancer therapy use increased for patients with stage IV non-squamous NSCLC (53.0–60.6%) but not squamous NSCLC (44.9–47.3%). 1-year OS improved in patients with stage IV non-squamous NSCLC (23–31%) but not squamous NSCLC (22–25%). Conclusion: Trends indicated improved OS as treatments evolved between 2005 and 2015, but the effect was limited to 1-year OS in stage IV disease.
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